# Supplementary Material (ESI) for New Journal of Chemistry # This journal is (c) The Royal Society of Chemistry and # The Centre National de la Recherche Scientifique, 2006 data_global _journal_name_full 'New J.Chem.(Nouv.J.Chim.)' _journal_coden_Cambridge 0440 _publ_contact_author_name 'Chick C. Wilson' _publ_contact_author_address ; Department of Chemistry, University of Glasgow, Glasgow G12 8QQ, Scotland ; _publ_contact_author_email C.C.Wilson@chem.gla.ac.uk _publ_contact_author_phone 0141-330-8522 _publ_contact_author_fax 0141-330-4888 loop_ _publ_author_name _publ_author_address C.C.Wilson ; Department of Chemistry, University of Glasgow, Glasgow G12 8QQ, Scotland ; 'Xuelian Xu.' ; Department of Pharmaceutical Sciences, University of Strathclyde, Glasgow G4 0NR, Scotland ; A.J.Florence ; Department of Pharmaceutical Sciences, University of Strathclyde, Glasgow G4 0NR, Scotland ; N.Shankland ; Department of Pharmaceutical Sciences, University of Strathclyde, Glasgow G4 0NR, Scotland ; _publ_section_title ; Temperature dependence of proton transfer in 4-chlorobenzoic acid ; _publ_requested_category Pre-Publication _publ_contact_letter ; The following cif details the single-crystal neutron structure refinement of 4-chlorobenzoic acid at T = 100 K, associated with the submission by Wilson et al., entitled Temperature dependence of proton transfer in 4-chlorobenzoic acid. The submission also includes refinements at 133, 200, 250 and 298 K. ; # Attachment 'CLB298_deposit1.cif' data_neutron_CLB298K _database_code_depnum_ccdc_archive 'CCDC 280795' _audit_creation_method 'from EXP file using GSAS2CIF' _chemical_name_systematic ; 4-Chlorobenzoic acid ; _chemical_formula_sum 'C7 H5 Cl O2' _chemical_formula_moiety 'C7 H5 Cl O2' _chemical_formula_weight 156.56 _chemical_melting_point 512 _symmetry_cell_setting triclinic _symmetry_space_group_name_H-M 'P -1' _symmetry_space_group_name_Hall '-P 1' loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x, -y, -z' _cell_length_a 14.368(9) _cell_length_b 6.132(4) _cell_length_c 3.778(2) _cell_angle_alpha 87.46(5) _cell_angle_beta 100.50(4) _cell_angle_gamma 92.94(4) _cell_volume 326.7(3) _cell_formula_units_Z 2 _cell_measurement_temperature 298(1) _cell_measurement_reflns_used 100 _exptl_crystal_colour colourless _exptl_crystal_description needle _exptl_crystal_size_max 2.25 _exptl_crystal_size_mid 1.75 _exptl_crystal_size_min 1 _exptl_crystal_preparation 'recrystallised from ethanol solution' _exptl_crystal_density_diffrn 1.592 _diffrn_ambient_temperature 298(1) _diffrn_radiation_probe neutron _diffrn_radiation_type neutron _diffrn_radiation_wavelength 0.48-4.8 _diffrn_measurement_device_type 'SXD time-of-flight Laue diffractometer' _diffrn_reflns_number 1619 _diffrn_source 'ISIS spallation source, Rutherford Appleton Laboratory' _computing_structure_refinement GSAS _refine_special_details ; Structure refinements were carried out using fully anisotropic displacement parameters on all atoms except the H-bonded atom, H1. The position of atom H1 was refined over two sites, H1 and H1A, with the site occupancy factors constrained to sum to unity and isotropic temperature factors constrained to be equal. ; _refine_ls_hydrogen_treatment mixed _refine_ls_number_reflns 799 _reflns_limit_h_min 0 _reflns_limit_h_max 23 _reflns_limit_k_min -12 _reflns_limit_k_max 10 _reflns_limit_l_min -11 _reflns_limit_l_max 6 _reflns_d_resolution_high 0.333 _reflns_d_resolution_low 4.728 _refine_ls_number_parameters 135 _refine_ls_R_factor_all 0.088 _refine_ls_wR_factor_all 0.063 _refine_ls_R_factor_obs ? _refine_ls_wR_factor_obs ? _refine_ls_goodness_of_fit_ref 3.92 _refine_ls_shift/su_max 0.02 _refine_ls_shift/su_mean 0.00 loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_thermal_displace_type _atom_site_U_iso_or_equiv _atom_site_symmetry_multiplicity Cl1 0.42576(19) 0.7840(6) 0.8305(9) 1.0 Uani 0.0576 2 O1 0.02104(27) 0.2423(9) 0.2316(15) 1.0 Uani 0.05271 2 O2 0.1184(4) 0.0181(8) 0.0602(15) 1.0 Uani 0.04476 2 C1 0.18365(23) 0.3325(7) 0.3670(9) 1.0 Uani 0.0299 2 C2 0.27763(23) 0.2787(7) 0.3763(11) 1.0 Uani 0.03654 2 C3 0.35231(28) 0.4146(7) 0.5216(11) 1.0 Uani 0.04227 2 C4 0.33246(24) 0.6113(7) 0.6531(10) 1.0 Uani 0.03698 2 C5 0.24215(25) 0.6717(7) 0.6457(11) 1.0 Uani 0.03886 2 C6 0.16620(25) 0.5312(7) 0.5035(10) 1.0 Uani 0.03577 2 C7 0.10381(24) 0.1871(7) 0.2086(10) 1.0 Uani 0.0325 2 H2 0.2894(5) 0.1260(15) 0.2749(25) 1.0 Uani 0.06162 2 H3 0.4210(6) 0.3716(17) 0.5245(27) 1.0 Uani 0.07326 2 H5 0.2269(6) 0.8214(16) 0.7497(27) 1.0 Uani 0.06795 2 H6 0.0942(6) 0.5713(16) 0.4996(24) 1.0 Uani 0.06514 2 H1 -0.0302(10) 0.1350(26) 0.117(4) 0.754(20) Uiso 0.0621(30) 2 H1A 0.0701(33) -0.041(8) -0.028(12) 0.246(20) Uiso 0.0621(30) 2 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Cl1 0.0534(17) 0.0577(22) 0.0600(20) -0.0135(15) 0.0078(16) -0.0118(19) O1 0.0274(23) 0.0557(32) 0.079(4) 0.0001(21) 0.0147(25) -0.0232(32) O2 0.0420(24) 0.0365(29) 0.0582(31) 0.0033(20) 0.0123(23) -0.0130(28) C1 0.0320(18) 0.0320(21) 0.0263(19) 0.0009(14) 0.0068(15) -0.0014(19) C2 0.0324(20) 0.0339(22) 0.0460(23) 0.0030(16) 0.0130(17) -0.0055(21) C3 0.0363(21) 0.0468(28) 0.0439(23) 0.0060(17) 0.0059(19) -0.0046(23) C4 0.0399(20) 0.0367(24) 0.0331(23) -0.0012(17) 0.0044(18) -0.0006(22) C5 0.0412(21) 0.0364(24) 0.0407(22) 0.0003(17) 0.0112(18) -0.0063(21) C6 0.0342(20) 0.0371(25) 0.0384(21) 0.0047(17) 0.0117(18) -0.0028(22) C7 0.0333(18) 0.0321(22) 0.0331(19) 0.0010(16) 0.0088(17) -0.0009(20) H2 0.053(4) 0.049(5) 0.089(7) 0.012(4) 0.023(4) -0.018(6) H3 0.049(5) 0.071(7) 0.102(7) 0.013(4) 0.013(4) -0.024(6) H5 0.076(5) 0.051(6) 0.079(7) 0.012(5) 0.014(5) -0.021(6) H6 0.047(4) 0.066(6) 0.086(7) 0.012(4) 0.017(4) -0.013(6) loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_distance Cl1 C4 1.719(5) O1 C7 1.272(6) O2 C7 1.245(7) O1 H1 1.011(17) O2 H1A 0.79(4) C1 C7 1.471(5) C1 C2 1.399(4) C1 C6 1.396(6) C2 C3 1.372(6) C3 C4 1.387(6) C4 C5 1.363(5) C5 C6 1.398(6) C2 H2 1.060(10) C3 H3 1.032(10) C5 H5 1.063(11) C6 H6 1.073(10) loop_ _geom_angle_atom_site_label_1 _geom_angle_atom_site_label_2 _geom_angle_atom_site_label_3 _geom_angle C7 O1 H1 112.7(10) C7 O2 H1A 111(4) C2 C1 C7 121.4(4) C6 C1 C7 119.7(3) C2 C1 C6 118.9(4) C1 C2 C3 121.6(4) C2 C3 C4 118.2(4) Cl1 C4 C3 118.4(3) C3 C4 C5 122.3(4) Cl1 C4 C5 119.3(3) C4 C5 C6 119.4(4) C1 C6 C5 119.7(4) O2 C7 C1 120.3(4) O1 C7 O2 122.6(5) O1 C7 C1 117.1(4) C1 C2 H2 117.7(5) C3 C2 H2 120.7(5) C2 C3 H3 120.2(7) C4 C3 H3 121.7(7) C4 C5 H5 122.4(6) C6 C5 H5 118.1(6) C1 C6 H6 118.8(6) C5 C6 H6 121.5(6) loop_ _geom_torsion_atom_site_label_1 _geom_torsion_atom_site_label_2 _geom_torsion_atom_site_label_3 _geom_torsion_atom_site_label_4 _geom_torsion C2 C1 C6 C5 0.0(6) C7 C1 C6 C5 -178.4(4) C7 C1 C2 C3 179.6(4) C2 C1 C7 O2 -4.2(6) C6 C1 C7 O1 -5.9(6) C2 C1 C7 O1 175.8(4) C6 C1 C2 C3 1.2(6) C6 C1 C7 O2 174.2(4) C1 C2 C3 C4 -1.5(6) C2 C3 C4 C5 0.7(6) C2 C3 C4 Cl1 -179.2(3) Cl1 C4 C5 C6 -179.7(3) C3 C4 C5 C6 0.5(6) C4 C5 C6 C1 -0.8(6) loop_ _geom_contact_atom_site_label_1 _geom_contact_atom_site_label_2 _geom_contact_distance _geom_contact_site_symmetry_1 _geom_contact_site_symmetry_2 H1 O1 2.733(18) . 2_555 H1 O2 1.600(17) . 2_555 H1 C7 2.462(18) . 2_555 H1 H1 2.20(2) . 2_555 H1A O1 1.84(5) . 2_555 H1A O2 2.70(4) . 2_555 H1A C7 2.59(5) . 2_555 H1A H1A 2.15(6) . 2_555 loop_ _geom_hbond_atom_site_label_D _geom_hbond_atom_site_label_H _geom_hbond_atom_site_label_A _geom_hbond_distance_DH _geom_hbond_distance_HA _geom_hbond_distance_DA _geom_hbond_angle_DHA _geom_hbond_site_symmetry_A #D H A D - H H...A D...A D - H...A symm(A) O1 H1 O2 1.011(17) 1.600(17) 2.608(8) 174.5(15) 2_555 O2 H1A O1 0.79(4) 1.84(5) 2.608(8) 164(5) 2_555 C5 H5 O2 1.063(11) 2.499(11) 3.439(7) 146.9(7) 1_566 C6 H6 O1 1.073(10) 2.446(10) 3.414(7) 149.4(7) 2_566 _chemical_name_common '4-Chlorobenzoic acid' data_neutron_CLB100K _database_code_depnum_ccdc_archive 'CCDC 280796' _audit_creation_method 'from EXP file using GSAS2CIF' _chemical_name_systematic ; 4-Chlorobenzoic acid ; _chemical_formula_sum 'C7 H5 Cl O2' _chemical_formula_moiety 'C7 H5 Cl O2' _chemical_formula_weight 156.56 _chemical_melting_point 512 _symmetry_cell_setting triclinic _symmetry_space_group_name_H-M 'P -1' _symmetry_space_group_name_Hall '-P 1' loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x, -y, -z' _cell_length_a 14.210(6) _cell_length_b 6.072(2) _cell_length_c 3.747(1) _cell_angle_alpha 87.68(3) _cell_angle_beta 100.32(3) _cell_angle_gamma 93.00(3) _cell_volume 317.48(19) _cell_formula_units_Z 2 _cell_measurement_temperature 100(1) _cell_measurement_reflns_used 100 _exptl_crystal_colour colourless _exptl_crystal_description needle _exptl_crystal_size_max 2.25 _exptl_crystal_size_mid 1.75 _exptl_crystal_size_min 1 _exptl_crystal_preparation 'recrystallised from ethanol solution' _exptl_crystal_density_diffrn 1.638 _diffrn_ambient_temperature 100(1) _diffrn_radiation_probe neutron _diffrn_radiation_type neutron _diffrn_radiation_wavelength 0.48-4.8 _diffrn_measurement_device_type 'SXD time-of-flight Laue diffractometer' _diffrn_reflns_number 3198 _diffrn_source 'ISIS spallation source, Rutherford Appleton Laboratory' _computing_structure_refinement GSAS _refine_special_details ; Structure refinements were carried out using fully anisotropic displacement parameters on all atoms except the H-bonded atom, H1. The position of atom H1 was refined over two sites, H1 and H1A, with the site occupancy factors constrained to sum to unity and isotropic temperature factors constrained to be equal. ; _refine_ls_hydrogen_treatment mixed _refine_ls_number_reflns 1804 _reflns_limit_h_min 0 _reflns_limit_h_max 36 _reflns_limit_k_min -13 _reflns_limit_k_max 13 _reflns_limit_l_min -9 _reflns_limit_l_max 8 _reflns_d_resolution_high 0.305 _reflns_d_resolution_low 4.685 _refine_ls_number_parameters 135 _refine_ls_R_factor_all 0.083 _refine_ls_wR_factor_all 0.064 _refine_ls_R_factor_obs ? _refine_ls_wR_factor_obs ? _refine_ls_goodness_of_fit_ref 3.12 _refine_ls_shift/su_max 0.02 _refine_ls_shift/su_mean 0.00 loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_thermal_displace_type _atom_site_U_iso_or_equiv _atom_site_symmetry_multiplicity _atom_site_disorder_assembly _atom_site_disorder_group Cl1 0.42791(10) 0.78716(26) 0.8266(4) 1.0 Uani 0.01916 2 . . O1 0.02069(17) 0.2454(4) 0.2383(7) 1.0 Uani 0.02008 2 . . O2 0.11813(18) 0.0185(4) 0.0544(6) 1.0 Uani 0.01639 2 . . C1 0.18464(14) 0.33389(32) 0.3660(4) 1.0 Uani 0.00947 2 . . C2 0.27771(14) 0.27410(32) 0.3749(5) 1.0 Uani 0.01189 2 . . C3 0.35332(15) 0.41307(34) 0.5187(4) 1.0 Uani 0.01323 2 . . C4 0.33459(13) 0.61177(32) 0.6499(4) 1.0 Uani 0.01149 2 . . C5 0.24246(15) 0.67455(34) 0.6438(5) 1.0 Uani 0.01262 2 . . C6 0.16748(15) 0.53410(32) 0.5022(5) 1.0 Uani 0.01208 2 . . C7 0.10428(14) 0.18584(32) 0.2079(5) 1.0 Uani 0.01007 2 . . H2 0.29030(34) 0.1208(7) 0.2698(12) 1.0 Uani 0.02969 2 . . H3 0.42471(34) 0.3686(9) 0.5268(13) 1.0 Uani 0.0315 2 . . H5 0.22947(33) 0.8279(7) 0.7489(12) 1.0 Uani 0.02899 2 . . H6 0.09420(34) 0.5775(8) 0.4958(12) 1.0 Uani 0.03036 2 . . H1 -0.0296(4) 0.1376(10) 0.1211(14) 0.911(12) Uiso 0.0314(12) 2 . . H1A 0.066(4) -0.032(10) -0.052(14) 0.089(12) Uiso 0.0314(12) 2 . . loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Cl1 0.0171(7) 0.0193(7) 0.0199(6) -0.0044(6) 0.0008(6) -0.0038(6) O1 0.0105(11) 0.0211(12) 0.0297(11) 0.0015(9) 0.0038(9) -0.0110(10) O2 0.0141(11) 0.0129(10) 0.0223(9) -0.0007(8) 0.0029(9) -0.0054(10) C1 0.0093(8) 0.0107(8) 0.0088(6) 0.0018(6) 0.0022(6) -0.0006(7) C2 0.0115(9) 0.0109(8) 0.0131(7) 0.0016(7) 0.0017(7) 0.0007(7) C3 0.0128(9) 0.0146(9) 0.0126(7) 0.0016(7) 0.0028(7) 0.0000(7) C4 0.0111(9) 0.0127(9) 0.0103(7) -0.0013(7) 0.0018(6) 0.0005(7) C5 0.0144(9) 0.0112(8) 0.0125(6) 0.0027(7) 0.0022(7) -0.0009(7) C6 0.0131(9) 0.0108(8) 0.0125(6) 0.0028(7) 0.0021(7) -0.0010(7) C7 0.0097(9) 0.0099(8) 0.0113(6) -0.0003(6) 0.0038(6) -0.0003(7) H2 0.0305(25) 0.0220(21) 0.0380(21) 0.0074(18) 0.0063(19) -0.0092(20) H3 0.0193(21) 0.0333(25) 0.0427(21) 0.0067(18) 0.0052(18) -0.0065(22) H5 0.0278(24) 0.0218(21) 0.0388(21) 0.0010(18) 0.0076(18) -0.0097(20) H6 0.0189(22) 0.0285(24) 0.0458(24) 0.0024(17) 0.0101(20) -0.0054(22) loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_distance Cl1 C4 1.711(3) O1 C7 1.285(3) O2 C7 1.229(3) O1 H1 0.997(6) O2 H1A 0.83(5) C1 C7 1.469(3) C1 C2 1.384(3) C1 C6 1.387(3) C2 C3 1.375(3) C3 C4 1.377(3) C4 C5 1.379(3) C5 C6 1.372(3) C2 H2 1.061(5) C3 H3 1.058(5) C5 H5 1.063(5) C6 H6 1.083(5) loop_ _geom_angle_atom_site_label_1 _geom_angle_atom_site_label_2 _geom_angle_atom_site_label_3 _geom_angle C7 O1 H1 110.4(4) C7 O2 H1A 108(4) C2 C1 C7 119.74(17) C6 C1 C7 120.22(18) C2 C1 C6 120.04(18) C1 C2 C3 120.06(18) C2 C3 C4 118.90(19) Cl1 C4 C3 119.41(16) C3 C4 C5 121.99(18) Cl1 C4 C5 118.59(15) C4 C5 C6 118.69(18) C1 C6 C5 120.3(2) O2 C7 C1 120.9(2) O1 C7 O2 123.6(2) O1 C7 C1 115.54(19) C1 C2 H2 119.6(3) C3 C2 H2 120.3(3) C2 C3 H3 120.6(3) C4 C3 H3 120.5(3) C4 C5 H5 120.9(3) C6 C5 H5 120.5(3) C1 C6 H6 119.1(3) C5 C6 H6 120.6(3) loop_ _geom_torsion_atom_site_label_1 _geom_torsion_atom_site_label_2 _geom_torsion_atom_site_label_3 _geom_torsion_atom_site_label_4 _geom_torsion C2 C1 C6 C5 0.5(3) C7 C1 C6 C5 -178.76(17) C7 C1 C2 C3 179.24(16) C2 C1 C7 O2 -6.5(3) C6 C1 C7 O1 -6.4(3) C2 C1 C7 O1 174.38(19) C6 C1 C2 C3 0.0(3) C6 C1 C7 O2 172.8(2) C1 C2 C3 C4 -0.5(3) C2 C3 C4 C5 0.5(2) C2 C3 C4 Cl1 -179.54(14) Cl1 C4 C5 C6 -180.00(16) C3 C4 C5 C6 0.0(3) C4 C5 C6 C1 -0.5(3) loop_ _geom_contact_atom_site_label_1 _geom_contact_atom_site_label_2 _geom_contact_distance _geom_contact_site_symmetry_1 _geom_contact_site_symmetry_2 H1 O1 2.754(6) . 2_555 H1 O2 1.595(6) . 2_555 H1 C7 2.452(6) . 2_555 H1 H1 2.206(8) . 2_555 H1A O1 1.81(6) . 2_555 H1A O2 2.62(6) . 2_555 H1A C7 2.52(6) . 2_555 H1A H1A 2.04(8) . 2_555 loop_ _geom_hbond_atom_site_label_D _geom_hbond_atom_site_label_H _geom_hbond_atom_site_label_A _geom_hbond_distance_DH _geom_hbond_distance_HA _geom_hbond_distance_DA _geom_hbond_angle_DHA _geom_hbond_site_symmetry_A #D H A D - H H...A D...A D - H...A symm(A) O1 H1 O2 0.997(6) 1.595(6) 2.588(4) 173.9(6) 2_555 O2 H1A O1 0.83(5) 1.81(6) 2.588(4) 156(6) 2_555 C5 H5 O2 1.063(5) 2.470(5) 3.387(3) 143.8(3) 1_566 C6 H6 O1 1.083(5) 2.381(5) 3.362(4) 149.8(4) 2_566 _chemical_name_common '4-Chlorobenzoic acid' # Attachment 'CLB133_deposit1.cif' data_neutron_CLB133K _database_code_depnum_ccdc_archive 'CCDC 280797' _audit_creation_method 'from EXP file using GSAS2CIF' _chemical_name_systematic ; 4-Chlorobenzoic acid ; _chemical_formula_sum 'C7 H5 Cl O2' _chemical_formula_moiety 'C7 H5 Cl O2' _chemical_formula_weight 156.56 _chemical_melting_point 512 _symmetry_cell_setting triclinic _symmetry_space_group_name_H-M 'P -1' _symmetry_space_group_name_Hall '-P 1' loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x, -y, -z' _cell_length_a 14.220(6) _cell_length_b 6.087(2) _cell_length_c 3.766(1) _cell_angle_alpha 87.91(4) _cell_angle_beta 100.22(3) _cell_angle_gamma 92.97(3) _cell_volume 320.25(19) _cell_formula_units_Z 2 _cell_measurement_temperature 133(1) _cell_measurement_reflns_used 100 _exptl_crystal_colour colourless _exptl_crystal_description needle _exptl_crystal_size_max 2.25 _exptl_crystal_size_mid 1.75 _exptl_crystal_size_min 1 _exptl_crystal_preparation 'recrystallised from ethanol solution' _exptl_crystal_density_diffrn 1.624 _diffrn_ambient_temperature 133(1) _diffrn_radiation_probe neutron _diffrn_radiation_type neutron _diffrn_radiation_wavelength 0.48-4.8 _diffrn_measurement_device_type 'SXD time-of-flight Laue diffractometer' _diffrn_reflns_number 1990 _diffrn_source 'ISIS spallation source, Rutherford Appleton Laboratory' _computing_structure_refinement GSAS _refine_special_details ; Structure refinements were carried out using fully anisotropic displacement parameters on all atoms except the H-bonded atom, H1. The position of atom H1 was refined over two sites, H1 and H1A, with the site occupancy factors constrained to sum to unity and isotropic temperature factors constrained to be equal. ; _refine_ls_hydrogen_treatment mixed _refine_ls_number_reflns 1102 _reflns_limit_h_min 0 _reflns_limit_h_max 25 _reflns_limit_k_min -11 _reflns_limit_k_max 14 _reflns_limit_l_min -7 _reflns_limit_l_max 9 _reflns_d_resolution_high 0.399 _reflns_d_resolution_low 5.669 _refine_ls_number_parameters 135 _refine_ls_R_factor_all 0.078 _refine_ls_wR_factor_all 0.060 _refine_ls_R_factor_obs ? _refine_ls_wR_factor_obs ? _refine_ls_goodness_of_fit_ref 2.58 _refine_ls_shift/su_max 0.04 _refine_ls_shift/su_mean 0.00 loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_thermal_displace_type _atom_site_U_iso_or_equiv _atom_site_symmetry_multiplicity Cl1 0.42751(16) 0.7865(4) 0.8275(6) 1.0 Uani 0.02508 2 O1 0.02057(25) 0.2443(7) 0.2357(10) 1.0 Uani 0.02471 2 O2 0.11798(30) 0.0178(6) 0.0545(10) 1.0 Uani 0.02203 2 C1 0.18486(22) 0.3342(5) 0.3663(7) 1.0 Uani 0.01243 2 C2 0.27740(21) 0.2746(5) 0.3750(8) 1.0 Uani 0.01514 2 C3 0.35340(24) 0.4135(5) 0.5193(8) 1.0 Uani 0.01693 2 C4 0.33425(21) 0.6105(5) 0.6503(7) 1.0 Uani 0.01481 2 C5 0.24222(23) 0.6740(5) 0.6442(8) 1.0 Uani 0.01557 2 C6 0.16730(24) 0.5332(5) 0.5036(8) 1.0 Uani 0.0154 2 C7 0.10440(22) 0.1863(5) 0.2087(8) 1.0 Uani 0.01397 2 H2 0.2913(5) 0.1193(12) 0.2755(18) 1.0 Uani 0.03709 2 H3 0.4233(5) 0.3693(13) 0.5249(19) 1.0 Uani 0.03877 2 H5 0.2289(5) 0.8242(12) 0.7511(19) 1.0 Uani 0.03631 2 H6 0.0941(5) 0.5776(13) 0.4998(19) 1.0 Uani 0.036 2 H1 -0.0291(7) 0.1372(16) 0.1163(23) 0.882(17) Uiso 0.0369(21) 2 H1A 0.071(5) -0.035(12) -0.043(17) 0.118(17) Uiso 0.0369(21) 2 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Cl1 0.0221(13) 0.0261(12) 0.0258(10) -0.0053(10) 0.0017(10) -0.0062(10) O1 0.0134(19) 0.0258(20) 0.0361(19) 0.0024(15) 0.0048(16) -0.0127(18) O2 0.0188(19) 0.0190(19) 0.0291(18) 0.0016(14) 0.0048(16) -0.0068(17) C1 0.0117(15) 0.0150(15) 0.0111(12) 0.0014(11) 0.0030(11) -0.0014(13) C2 0.0135(15) 0.0132(14) 0.0187(13) 0.0012(11) 0.0024(12) -0.0018(13) C3 0.0155(16) 0.0168(15) 0.0181(13) 0.0018(12) 0.0016(13) -0.0008(14) C4 0.0150(16) 0.0149(15) 0.0138(13) -0.0021(12) 0.0015(11) -0.0004(13) C5 0.0168(15) 0.0147(14) 0.0161(12) 0.0033(11) 0.0043(12) -0.0020(13) C6 0.0163(16) 0.0137(15) 0.0171(12) 0.0043(12) 0.0041(12) -0.0014(13) C7 0.0131(15) 0.0143(14) 0.0152(11) -0.0001(12) 0.0043(12) -0.0010(13) H2 0.039(4) 0.030(4) 0.046(4) 0.0077(31) 0.0116(32) -0.011(4) H3 0.027(4) 0.041(4) 0.051(4) 0.0067(30) 0.0104(32) -0.008(4) H5 0.037(4) 0.025(4) 0.047(4) 0.0047(30) 0.0029(32) -0.009(4) H6 0.0198(34) 0.041(4) 0.049(4) 0.0070(29) 0.0077(32) -0.005(4) loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_distance Cl1 C4 1.715(4) O1 C7 1.282(5) O2 C7 1.237(5) O1 H1 0.994(10) O2 H1A 0.76(7) C1 C7 1.471(4) C1 C2 1.377(4) C1 C6 1.386(4) C2 C3 1.382(4) C3 C4 1.371(4) C4 C5 1.381(4) C5 C6 1.374(4) C2 H2 1.070(8) C3 H3 1.040(8) C5 H5 1.051(8) C6 H6 1.086(8) loop_ _geom_angle_atom_site_label_1 _geom_angle_atom_site_label_2 _geom_angle_atom_site_label_3 _geom_angle C7 O1 H1 110.6(7) C7 O2 H1A 111(6) C2 C1 C7 119.8(3) C6 C1 C7 119.9(3) C2 C1 C6 120.3(3) C1 C2 C3 120.2(3) C2 C3 C4 118.5(3) Cl1 C4 C3 119.3(2) C3 C4 C5 122.4(3) Cl1 C4 C5 118.3(2) C4 C5 C6 118.5(3) C1 C6 C5 120.1(3) O2 C7 C1 121.0(3) O1 C7 O2 122.7(4) O1 C7 C1 116.3(3) C1 C2 H2 120.6(5) C3 C2 H2 119.3(5) C2 C3 H3 120.3(5) C4 C3 H3 121.2(5) C4 C5 H5 121.4(5) C6 C5 H5 120.1(5) C1 C6 H6 119.8(5) C5 C6 H6 120.1(5) loop_ _geom_torsion_atom_site_label_1 _geom_torsion_atom_site_label_2 _geom_torsion_atom_site_label_3 _geom_torsion_atom_site_label_4 _geom_torsion C2 C1 C6 C5 1.1(4) C7 C1 C6 C5 -178.6(3) C7 C1 C2 C3 179.4(3) C2 C1 C7 O2 -6.5(5) C6 C1 C7 O1 -5.7(4) C2 C1 C7 O1 174.6(3) C6 C1 C2 C3 -0.3(4) C6 C1 C7 O2 173.2(3) C1 C2 C3 C4 -0.3(4) C2 C3 C4 C5 0.3(4) C2 C3 C4 Cl1 -179.5(2) Cl1 C4 C5 C6 -179.8(2) C3 C4 C5 C6 0.5(4) C4 C5 C6 C1 -1.1(4) loop_ _geom_contact_atom_site_label_1 _geom_contact_atom_site_label_2 _geom_contact_distance _geom_contact_site_symmetry_1 _geom_contact_site_symmetry_2 H1 O1 2.733(10) . 2_555 H1 O2 1.592(10) . 2_555 H1 C7 2.452(10) . 2_555 H1 H1 2.178(13) . 2_555 H1A O1 1.85(7) . 2_555 H1A O2 2.69(7) . 2_555 H1A C7 2.59(7) . 2_555 H1A H1A 2.17(10) . 2_555 loop_ _geom_hbond_atom_site_label_D _geom_hbond_atom_site_label_H _geom_hbond_atom_site_label_A _geom_hbond_distance_DH _geom_hbond_distance_HA _geom_hbond_distance_DA _geom_hbond_angle_DHA _geom_hbond_site_symmetry_A #D H A D - H H...A D...A D - H...A symm(A) O1 H1 O2 0.994(10) 1.592(10) 2.581(6) 172.8(9) 2_555 O2 H1A O1 0.76(7) 1.85(7) 2.581(6) 161(7) 2_555 C5 H5 O2 1.051(8) 2.472(8) 3.387(5) 145.0(6) 1_566 C6 H6 O1 1.086(8) 2.380(9) 3.368(5) 150.3(6) 2_566 _chemical_name_common '4-Chlorobenzoic acid' # Attachment 'CLB200_deposit1.cif' data_neutron_CLB200K _database_code_depnum_ccdc_archive 'CCDC 280798' _audit_creation_method 'from EXP file using GSAS2CIF' _chemical_name_systematic ; 4-Chlorobenzoic acid ; _chemical_formula_sum 'C7 H5 Cl O2' _chemical_formula_moiety 'C7 H5 Cl O2' _chemical_formula_weight 156.56 _chemical_melting_point 512 _symmetry_cell_setting triclinic _symmetry_space_group_name_H-M 'P -1' _symmetry_space_group_name_Hall '-P 1' loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x, -y, -z' _cell_length_a 14.209(7) _cell_length_b 6.120(2) _cell_length_c 3.794(1) _cell_angle_alpha 88.31(4) _cell_angle_beta 100.19(4) _cell_angle_gamma 93.03(3) _cell_volume 324.2(2) _cell_formula_units_Z 2 _cell_measurement_temperature 200(1) _cell_measurement_reflns_used 100 _exptl_crystal_colour colourless _exptl_crystal_description needle _exptl_crystal_size_max 2.25 _exptl_crystal_size_mid 1.75 _exptl_crystal_size_min 1 _exptl_crystal_preparation 'recrystallised from ethanol solution' _exptl_crystal_density_diffrn 1.604 _diffrn_ambient_temperature 200(1) _diffrn_radiation_probe neutron _diffrn_radiation_type neutron _diffrn_radiation_wavelength 0.48-4.8 _diffrn_measurement_device_type 'SXD time-of-flight Laue diffractometer' _diffrn_reflns_number 1413 _diffrn_source 'ISIS spallation source, Rutherford Appleton Laboratory' _computing_structure_refinement GSAS _refine_special_details ; Structure refinements were carried out using fully anisotropic displacement parameters on all atoms except the H-bonded atom, H1. The position of atom H1 was refined over two sites, H1 and H1A, with the site occupancy factors constrained to sum to unity and isotropic temperature factors constrained to be equal. ; _refine_ls_hydrogen_treatment mixed _refine_ls_number_reflns 761 _reflns_limit_h_min 0 _reflns_limit_h_max 23 _reflns_limit_k_min -10 _reflns_limit_k_max 10 _reflns_limit_l_min -6 _reflns_limit_l_max 6 _reflns_d_resolution_high 0.527 _reflns_d_resolution_low 5.700 _refine_ls_number_parameters 135 _refine_ls_R_factor_all 0.077 _refine_ls_wR_factor_all 0.054 _refine_ls_R_factor_obs ? _refine_ls_wR_factor_obs ? _refine_ls_goodness_of_fit_ref 2.42 _refine_ls_shift/su_max 0.05 _refine_ls_shift/su_mean 0.00 loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_thermal_displace_type _atom_site_U_iso_or_equiv _atom_site_symmetry_multiplicity Cl1 0.42680(21) 0.7842(5) 0.8296(8) 1.0 Uani 0.03873 2 O1 0.02072(34) 0.2433(9) 0.2313(14) 1.0 Uani 0.03768 2 O2 0.1189(4) 0.0188(9) 0.0549(14) 1.0 Uani 0.03182 2 C1 0.18478(29) 0.3337(7) 0.3687(10) 1.0 Uani 0.02003 2 C2 0.27787(29) 0.2767(7) 0.3774(11) 1.0 Uani 0.02488 2 C3 0.35239(31) 0.4163(7) 0.5180(10) 1.0 Uani 0.02569 2 C4 0.33357(27) 0.6103(6) 0.6519(9) 1.0 Uani 0.02214 2 C5 0.24173(30) 0.6735(7) 0.6438(10) 1.0 Uani 0.02569 2 C6 0.16690(32) 0.5331(7) 0.5025(10) 1.0 Uani 0.02372 2 C7 0.10436(27) 0.1858(6) 0.2098(10) 1.0 Uani 0.02051 2 H2 0.2905(6) 0.1201(14) 0.2759(24) 1.0 Uani 0.04573 2 H3 0.4233(6) 0.3692(18) 0.5260(24) 1.0 Uani 0.04983 2 H5 0.2275(6) 0.8234(15) 0.7545(25) 1.0 Uani 0.04797 2 H6 0.0944(7) 0.5731(16) 0.4984(23) 1.0 Uani 0.05178 2 H1 -0.0293(12) 0.1378(25) 0.117(4) 0.793(22) Uiso 0.0481(31) 2 H1A 0.075(5) -0.055(10) -0.041(14) 0.207(22) Uiso 0.0481(31) 2 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Cl1 0.0331(19) 0.0406(18) 0.0400(17) -0.0099(14) 0.0017(15) -0.0085(16) O1 0.0249(30) 0.0376(28) 0.0529(31) 0.0044(24) 0.0101(26) -0.0152(29) O2 0.0301(27) 0.0261(25) 0.0398(26) 0.0036(21) 0.0058(24) -0.0077(25) C1 0.0157(21) 0.0225(20) 0.0226(20) 0.0034(16) 0.0038(17) -0.0030(20) C2 0.0218(22) 0.0230(20) 0.0298(21) 0.0060(17) 0.0025(18) -0.0040(20) C3 0.0218(23) 0.0283(23) 0.0274(20) 0.0052(18) 0.0044(19) 0.0004(21) C4 0.0238(24) 0.0230(21) 0.0185(19) -0.0041(18) 0.0024(17) 0.0013(19) C5 0.0255(23) 0.0247(21) 0.0287(20) 0.0019(17) 0.0086(19) -0.0052(20) C6 0.0236(23) 0.0215(21) 0.0271(20) 0.0040(17) 0.0059(19) -0.0048(20) C7 0.0202(21) 0.0193(19) 0.0230(17) 0.0003(17) 0.0067(18) 0.0002(18) H2 0.038(5) 0.033(4) 0.069(6) 0.011(4) 0.011(4) -0.012(5) H3 0.024(5) 0.066(6) 0.060(5) 0.002(4) 0.008(4) -0.004(6) H5 0.054(6) 0.032(5) 0.058(6) 0.002(4) 0.012(5) -0.007(5) H6 0.041(6) 0.052(6) 0.063(6) 0.015(5) 0.006(5) -0.010(6) loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_distance Cl1 C4 1.708(5) O1 C7 1.275(6) O2 C7 1.238(7) O1 H1 0.983(16) O2 H1A 0.79(6) C1 C7 1.472(6) C1 C2 1.380(6) C1 C6 1.388(6) C2 C3 1.366(6) C3 C4 1.362(6) C4 C5 1.376(6) C5 C6 1.373(6) C2 H2 1.078(9) C3 H3 1.058(10) C5 H5 1.064(10) C6 H6 1.069(11) loop_ _geom_angle_atom_site_label_1 _geom_angle_atom_site_label_2 _geom_angle_atom_site_label_3 _geom_angle C7 O1 H1 111.9(10) C7 O2 H1A 120(5) C2 C1 C7 120.1(4) C6 C1 C7 119.9(4) C2 C1 C6 120.0(4) C1 C2 C3 120.0(4) C2 C3 C4 119.3(4) Cl1 C4 C3 119.2(4) C3 C4 C5 122.3(4) Cl1 C4 C5 118.5(3) C4 C5 C6 118.4(4) C1 C6 C5 120.1(4) O2 C7 C1 120.7(4) O1 C7 O2 122.8(5) O1 C7 C1 116.5(4) C1 C2 H2 119.0(6) C3 C2 H2 121.0(6) C2 C3 H3 119.1(7) C4 C3 H3 121.6(7) C4 C5 H5 121.9(6) C6 C5 H5 119.6(6) C1 C6 H6 118.9(6) C5 C6 H6 121.0(6) loop_ _geom_torsion_atom_site_label_1 _geom_torsion_atom_site_label_2 _geom_torsion_atom_site_label_3 _geom_torsion_atom_site_label_4 _geom_torsion C2 C1 C6 C5 -0.1(6) C7 C1 C6 C5 -178.6(4) C7 C1 C2 C3 178.6(4) C2 C1 C7 O2 -6.4(6) C6 C1 C7 O1 -5.7(6) C2 C1 C7 O1 175.8(4) C6 C1 C2 C3 0.1(6) C6 C1 C7 O2 172.2(4) C1 C2 C3 C4 0.7(6) C2 C3 C4 C5 -1.4(6) C2 C3 C4 Cl1 179.7(3) Cl1 C4 C5 C6 -179.7(3) C3 C4 C5 C6 1.4(6) C4 C5 C6 C1 -0.7(6) loop_ _geom_contact_atom_site_label_1 _geom_contact_atom_site_label_2 _geom_contact_distance _geom_contact_site_symmetry_1 _geom_contact_site_symmetry_2 H1 O1 2.734(14) . 2_555 H1 O2 1.607(16) . 2_555 H1 C7 2.461(14) . 2_555 H1 H1 2.20(2) . 2_555 H1A O1 1.80(7) . 2_555 H1A O2 2.77(7) . 2_555 H1A C7 2.61(7) . 2_555 H1A H1A 2.34(10) . 2_555 loop_ _geom_hbond_atom_site_label_D _geom_hbond_atom_site_label_H _geom_hbond_atom_site_label_A _geom_hbond_distance_DH _geom_hbond_distance_HA _geom_hbond_distance_DA _geom_hbond_angle_DHA _geom_hbond_site_symmetry_A #D H A D - H H...A D...A D - H...A symm(A) O1 H1 O2 0.983(16) 1.607(16) 2.587(8) 174.0(15) 2_555 O2 H1A O1 0.79(6) 1.80(7) 2.587(8) 175(5) 2_555 C5 H5 O2 1.064(10) 2.450(10) 3.390(7) 146.6(7) 1_566 C6 H6 O1 1.069(11) 2.418(11) 3.379(7) 149.0(7) 2_566 _chemical_name_common '4-Chlorobenzoic acid' # Attachment 'CLB250_deposit1.cif' data_neutron_CLB250K _database_code_depnum_ccdc_archive 'CCDC 280799' _audit_creation_method 'from EXP file using GSAS2CIF' _chemical_name_systematic ; 4-Chlorobenzoic acid ; _chemical_formula_sum 'C7 H5 Cl O2' _chemical_formula_moiety 'C7 H5 Cl O2' _chemical_formula_weight 156.56 _chemical_melting_point 512 _symmetry_cell_setting triclinic _symmetry_space_group_name_H-M 'P -1' _symmetry_space_group_name_Hall '-P 1' loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x, -y, -z' _cell_length_a 14.272(8) _cell_length_b 6.141(3) _cell_length_c 3.813(2) _cell_angle_alpha 88.53(4) _cell_angle_beta 100.11(4) _cell_angle_gamma 93.18(3) _cell_volume 328.5(3) _cell_formula_units_Z 2 _cell_measurement_temperature 250(1) _cell_measurement_reflns_used 100 _exptl_crystal_colour colourless _exptl_crystal_description needle _exptl_crystal_size_max 2.25 _exptl_crystal_size_mid 1.75 _exptl_crystal_size_min 1 _exptl_crystal_preparation 'recrystallised from ethanol solution' _exptl_crystal_density_diffrn 1.583 _diffrn_ambient_temperature 250(1) _diffrn_radiation_probe neutron _diffrn_radiation_type neutron _diffrn_radiation_wavelength 0.48-4.8 _diffrn_measurement_device_type 'SXD time-of-flight Laue diffractometer' _diffrn_reflns_number 1178 _diffrn_source 'ISIS spallation source, Rutherford Appleton Laboratory' _computing_structure_refinement GSAS _refine_special_details ; Structure refinements were carried out using fully anisotropic displacement parameters on all atoms except the H-bonded atom, H1. The position of atom H1 was refined over two sites, H1 and H1A, with the site occupancy factors constrained to sum to unity and isotropic temperature factors constrained to be equal. ; _refine_ls_hydrogen_treatment mixed _refine_ls_number_reflns 671 _reflns_limit_h_min 0 _reflns_limit_h_max 23 _reflns_limit_k_min -10 _reflns_limit_k_max 9 _reflns_limit_l_min -9 _reflns_limit_l_max 6 _reflns_d_resolution_high 0.417 _reflns_d_resolution_low 5.728 _refine_ls_number_parameters 135 _refine_ls_R_factor_all 0.086 _refine_ls_wR_factor_all 0.061 _refine_ls_R_factor_obs ? _refine_ls_wR_factor_obs ? _refine_ls_goodness_of_fit_ref 2.84 _refine_ls_shift/su_max 0.03 _refine_ls_shift/su_mean 0.00 loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_thermal_displace_type _atom_site_U_iso_or_equiv _atom_site_symmetry_multiplicity Cl1 0.42634(25) 0.7851(6) 0.8302(10) 1.0 Uani 0.04843 2 O1 0.0206(4) 0.2415(11) 0.2285(18) 1.0 Uani 0.04813 2 O2 0.1188(5) 0.0180(11) 0.0594(17) 1.0 Uani 0.04236 2 C1 0.18363(34) 0.3348(9) 0.3683(12) 1.0 Uani 0.02618 2 C2 0.27742(34) 0.2764(8) 0.3791(13) 1.0 Uani 0.03254 2 C3 0.3516(4) 0.4133(8) 0.5198(12) 1.0 Uani 0.03424 2 C4 0.33363(33) 0.6100(8) 0.6537(11) 1.0 Uani 0.02979 2 C5 0.2412(4) 0.6717(9) 0.6438(13) 1.0 Uani 0.03284 2 C6 0.1672(4) 0.5319(8) 0.5037(13) 1.0 Uani 0.03072 2 C7 0.10435(32) 0.1876(7) 0.2088(12) 1.0 Uani 0.02686 2 H2 0.2900(8) 0.1254(18) 0.2745(31) 1.0 Uani 0.06265 2 H3 0.4236(9) 0.3730(21) 0.5250(33) 1.0 Uani 0.06779 2 H5 0.2261(7) 0.8238(17) 0.7498(30) 1.0 Uani 0.05858 2 H6 0.0942(8) 0.5747(19) 0.4989(30) 1.0 Uani 0.06081 2 H1 -0.0280(19) 0.135(4) 0.116(6) 0.75(4) Uiso 0.065(5) 2 H1A 0.070(6) -0.061(12) -0.056(17) 0.25(4) Uiso 0.065(5) 2 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Cl1 0.0439(24) 0.0473(21) 0.0499(23) -0.0124(17) 0.0003(21) -0.0087(20) O1 0.031(4) 0.049(4) 0.067(4) 0.0050(30) 0.0100(33) -0.022(4) O2 0.0377(35) 0.038(4) 0.0520(35) -0.0044(29) 0.0102(31) -0.0114(34) C1 0.0218(26) 0.0313(26) 0.0266(25) 0.0056(20) 0.0051(22) -0.0070(24) C2 0.0290(28) 0.0298(26) 0.0389(28) 0.0049(22) 0.0046(26) -0.0036(25) C3 0.0268(29) 0.0399(29) 0.0368(28) 0.0055(22) 0.0065(28) -0.0012(26) C4 0.0284(28) 0.0328(26) 0.0286(27) -0.0038(22) 0.0079(23) -0.0006(25) C5 0.0377(32) 0.0263(25) 0.0365(27) 0.0032(21) 0.0110(26) -0.0024(24) C6 0.0289(29) 0.0302(27) 0.0342(26) 0.0072(22) 0.0068(26) -0.0008(26) C7 0.0245(26) 0.0266(25) 0.0318(23) 0.0017(22) 0.0104(23) -0.0054(23) H2 0.047(7) 0.059(7) 0.087(8) 0.014(6) 0.019(6) -0.031(7) H3 0.044(7) 0.079(8) 0.080(7) 0.014(6) 0.007(6) -0.011(7) H5 0.065(8) 0.038(6) 0.074(8) 0.002(5) 0.014(6) -0.018(6) H6 0.037(6) 0.062(7) 0.085(8) 0.013(5) 0.011(6) -0.015(7) loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_distance Cl1 C4 1.711(6) O1 C7 1.274(7) O2 C7 1.244(8) O1 H1 0.98(3) O2 H1A 0.88(7) C1 C7 1.462(7) C1 C2 1.398(6) C1 C6 1.376(7) C2 C3 1.357(7) C3 C4 1.378(7) C4 C5 1.386(7) C5 C6 1.365(8) C2 H2 1.055(12) C3 H3 1.067(14) C5 H5 1.075(12) C6 H6 1.086(13) loop_ _geom_angle_atom_site_label_1 _geom_angle_atom_site_label_2 _geom_angle_atom_site_label_3 _geom_angle C7 O1 H1 111.9(17) C7 O2 H1A 120(6) C2 C1 C7 119.7(5) C6 C1 C7 120.9(4) C2 C1 C6 119.4(5) C1 C2 C3 120.4(5) C2 C3 C4 119.3(5) Cl1 C4 C3 119.9(4) C3 C4 C5 121.3(5) Cl1 C4 C5 118.8(4) C4 C5 C6 118.8(5) C1 C6 C5 120.8(5) O2 C7 C1 121.1(5) O1 C7 O2 121.8(6) O1 C7 C1 117.1(5) C1 C2 H2 119.4(8) C3 C2 H2 120.2(8) C2 C3 H3 121.4(8) C4 C3 H3 119.3(8) C4 C5 H5 122.1(7) C6 C5 H5 119.1(8) C1 C6 H6 118.9(8) C5 C6 H6 120.2(8) loop_ _geom_torsion_atom_site_label_1 _geom_torsion_atom_site_label_2 _geom_torsion_atom_site_label_3 _geom_torsion_atom_site_label_4 _geom_torsion C2 C1 C6 C5 0.8(7) C7 C1 C6 C5 -178.2(5) C7 C1 C2 C3 178.7(4) C2 C1 C7 O2 -5.2(8) C6 C1 C7 O1 -5.8(7) C2 C1 C7 O1 175.2(5) C6 C1 C2 C3 -0.4(7) C6 C1 C7 O2 173.9(5) C1 C2 C3 C4 0.3(7) C2 C3 C4 C5 -0.7(7) C2 C3 C4 Cl1 -179.7(4) Cl1 C4 C5 C6 -179.9(4) C3 C4 C5 C6 1.2(7) C4 C5 C6 C1 -1.2(7) loop_ _geom_contact_atom_site_label_1 _geom_contact_atom_site_label_2 _geom_contact_distance _geom_contact_site_symmetry_1 _geom_contact_site_symmetry_2 H1 O1 2.70(3) . 2_555 H1 O2 1.61(3) . 2_555 H1 C7 2.46(2) . 2_555 H1 H1 2.15(4) . 2_555 H1A O1 1.71(8) . 2_555 H1A O2 2.72(9) . 2_555 H1A C7 2.54(9) . 2_555 H1A H1A 2.28(12) . 2_555 loop_ _geom_hbond_atom_site_label_D _geom_hbond_atom_site_label_H _geom_hbond_atom_site_label_A _geom_hbond_distance_DH _geom_hbond_distance_HA _geom_hbond_distance_DA _geom_hbond_angle_DHA _geom_hbond_site_symmetry_A #D H A D - H H...A D...A D - H...A symm(A) O1 H1 O2 0.98(3) 1.61(3) 2.583(10) 172(2) 2_555 O2 H1A O1 0.88(7) 1.71(8) 2.583(10) 171(7) 2_555 C5 H5 O2 1.075(12) 2.463(13) 3.412(9) 146.6(8) 1_566 C6 H6 O1 1.086(13) 2.429(13) 3.407(8) 149.2(9) 2_566 _chemical_name_common '4-Chlorobenzoic acid'