# Electronic Supplementary Material (ESI) for Chemical Communications # This journal is © The Royal Society of Chemistry 2013 ####################################################################### # # Cambridge Crystallographic Data Centre # CCDC # ####################################################################### # # This CIF contains data from an original supplementary publication # deposited with the CCDC, and may include chemical, crystal, # experimental, refinement, atomic coordinates, # anisotropic displacement parameters and molecular geometry data, # as required by the journal to which it was submitted. # # This CIF is provided on the understanding that it is used for bona # fide research purposes only. It may contain copyright material # of the CCDC or of third parties, and may not be copied or further # disseminated in any form, whether machine-readable or not, # except for the purpose of generating routine backup copies # on your local computer system. # # For further information on the CCDC, data deposition and # data retrieval see: # www.ccdc.cam.ac.uk # # Bona fide researchers may freely download Mercury and enCIFer # from this site to visualise CIF-encoded structures and # to carry out CIF format checking respectively. # data_x _audit_creation_method SHELXL-97 _chemical_name_systematic ; ? ; _chemical_name_common ? _chemical_melting_point ? _chemical_formula_moiety 'C19 H23 N O5' _chemical_formula_sum 'C19 H23 N O5' _chemical_formula_weight 345.38 _chemical_absolute_configuration syn loop_ _atom_type_symbol _atom_type_description _atom_type_scat_dispersion_real _atom_type_scat_dispersion_imag _atom_type_scat_source C C 0.0033 0.0016 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' H H 0.0000 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' N N 0.0061 0.0033 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' O O 0.0106 0.0060 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' _symmetry_cell_setting monoclinic _symmetry_space_group_name_H-M 'P 21' loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x, y+1/2, -z' _cell_length_a 11.1442(19) _cell_length_b 5.9143(10) _cell_length_c 13.609(2) _cell_angle_alpha 90.00 _cell_angle_beta 94.567(4) _cell_angle_gamma 90.00 _cell_volume 894.1(3) _cell_formula_units_Z 2 _cell_measurement_temperature 298(1) _cell_measurement_reflns_used 903 _cell_measurement_theta_min 2.25 _cell_measurement_theta_max 21.18 _exptl_crystal_description plate _exptl_crystal_colour colorless _exptl_crystal_size_max 0.38 _exptl_crystal_size_mid 0.08 _exptl_crystal_size_min 0.03 _exptl_crystal_density_meas ? _exptl_crystal_density_diffrn 1.283 _exptl_crystal_density_method 'not measured' _exptl_crystal_F_000 368 _exptl_absorpt_coefficient_mu 0.093 _exptl_absorpt_correction_type multi-scan _exptl_absorpt_correction_T_min 0.9276 _exptl_absorpt_correction_T_max 0.9972 _exptl_absorpt_process_details 'Bruker/Siemens SADABS V2.03' _exptl_special_details ; ? ; _diffrn_ambient_temperature 298(1) _diffrn_radiation_wavelength 0.71073 _diffrn_radiation_type MoK\a _diffrn_radiation_source 'fine-focus sealed tube' _diffrn_radiation_monochromator graphite _diffrn_measurement_device_type 'CCD area detector' _diffrn_measurement_method 'phi and omega scans' _diffrn_detector_area_resol_mean ? _diffrn_standards_number ? _diffrn_standards_interval_count ? _diffrn_standards_interval_time ? _diffrn_standards_decay_% ? _diffrn_reflns_number 7694 _diffrn_reflns_av_R_equivalents 0.0443 _diffrn_reflns_av_sigmaI/netI 0.0624 _diffrn_reflns_limit_h_min -13 _diffrn_reflns_limit_h_max 13 _diffrn_reflns_limit_k_min -7 _diffrn_reflns_limit_k_max 7 _diffrn_reflns_limit_l_min -16 _diffrn_reflns_limit_l_max 16 _diffrn_reflns_theta_min 2.28 _diffrn_reflns_theta_max 25.06 _reflns_number_total 3131 _reflns_number_gt 1784 _reflns_threshold_expression I>2\s(I) _computing_data_collection 'Bruker SMART V5.625' _computing_cell_refinement 'Bruker SMART V5.625' _computing_data_reduction 'Bruker SAINT V6.28A' _computing_structure_solution 'SHELXS-97 (Sheldrick, 1997)' _computing_structure_refinement 'SHELXL-97 (Sheldrick, 1997)' _computing_molecular_graphics 'SHELXTL Rel. 6.12/V (Siemens, 1996)' _computing_publication_material 'SHELX-97 (Sheldrick, 1997)' _refine_special_details ; Refinement of F^2^ against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F^2^, conventional R-factors R are based on F, with F set to zero for negative F^2^. The threshold expression of F^2^ > 2sigma(F^2^) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F^2^ are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. ; _refine_ls_structure_factor_coef Fsqd _refine_ls_matrix_type full _refine_ls_weighting_scheme calc _refine_ls_weighting_details 'calc w=1/[\s^2^(Fo^2^)+(0.0622P)^2^+0.0067P] where P=(Fo^2^+2Fc^2^)/3' _atom_sites_solution_primary direct _atom_sites_solution_secondary difmap _atom_sites_solution_hydrogens geom _refine_ls_hydrogen_treatment constr _refine_ls_extinction_method none _refine_ls_extinction_coef ? _refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881' _refine_ls_abs_structure_Flack . _refine_ls_number_reflns 3131 _refine_ls_number_parameters 229 _refine_ls_number_restraints 1 _refine_ls_R_factor_all 0.1096 _refine_ls_R_factor_gt 0.0532 _refine_ls_wR_factor_ref 0.1415 _refine_ls_wR_factor_gt 0.1161 _refine_ls_goodness_of_fit_ref 1.002 _refine_ls_restrained_S_all 1.001 _refine_ls_shift/su_max 0.011 _refine_ls_shift/su_mean 0.000 loop_ _atom_site_label _atom_site_type_symbol _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv _atom_site_adp_type _atom_site_occupancy _atom_site_symmetry_multiplicity _atom_site_calc_flag _atom_site_refinement_flags _atom_site_disorder_assembly _atom_site_disorder_group N1 N 0.2961(3) 0.2084(5) 0.1332(2) 0.0616(8) Uani 1 1 d . . . C1 C 0.4009(4) 0.3603(7) 0.1399(3) 0.0713(11) Uani 1 1 d . . . H1A H 0.4718 0.2810 0.1211 0.086 Uiso 1 1 calc R . . H1B H 0.4168 0.4154 0.2068 0.086 Uiso 1 1 calc R . . C2 C 0.3707(3) 0.5555(7) 0.0700(3) 0.0681(10) Uani 1 1 d . . . H2 H 0.3932 0.5174 0.0039 0.082 Uiso 1 1 calc R . . O1 O 0.4319(3) 0.7564(5) 0.1043(3) 0.0946(10) Uani 1 1 d . . . H1 H 0.3964 0.8673 0.0803 0.142 Uiso 1 1 calc R . . C3 C 0.2353(3) 0.5687(7) 0.0700(3) 0.0744(11) Uani 1 1 d . . . H3A H 0.2004 0.6419 0.0106 0.089 Uiso 1 1 calc R . . H3B H 0.2119 0.6513 0.1270 0.089 Uiso 1 1 calc R . . C4 C 0.1958(3) 0.3232(6) 0.0738(2) 0.0620(10) Uani 1 1 d . . . C5 C 0.0830(3) 0.2767(7) 0.1267(3) 0.0731(11) Uani 1 1 d . . . H5A H 0.0627 0.4055 0.1663 0.088 Uiso 1 1 calc R . . H5B H 0.0152 0.2416 0.0801 0.088 Uiso 1 1 calc R . . C6 C 0.1176(3) 0.0746(7) 0.1911(3) 0.0663(10) Uani 1 1 d . . . H6 H 0.1140 -0.0609 0.1495 0.080 Uiso 1 1 calc R . . C7 C 0.2512(3) 0.1221(6) 0.2250(2) 0.0598(10) Uani 1 1 d . . . H7 H 0.2913 -0.0217 0.2420 0.072 Uiso 1 1 calc R . . C8 C 0.1794(4) 0.2350(8) -0.0318(3) 0.0805(12) Uani 1 1 d . . . O2 O 0.1023(5) 0.2978(10) -0.0883(3) 0.204(3) Uani 1 1 d . . . O3 O 0.2541(3) 0.0828(6) -0.05329(19) 0.0911(9) Uani 1 1 d . . . C9 C 0.2422(5) 0.0071(11) -0.1563(3) 0.119(2) Uani 1 1 d . . . H9A H 0.1648 0.0508 -0.1863 0.179 Uiso 1 1 calc R . . H9B H 0.2499 -0.1545 -0.1586 0.179 Uiso 1 1 calc R . . H9C H 0.3042 0.0754 -0.1914 0.179 Uiso 1 1 calc R . . C10 C 0.0398(4) 0.0370(8) 0.2738(3) 0.0753(12) Uani 1 1 d . . . O4 O -0.0262(3) 0.1731(6) 0.3061(3) 0.1117(12) Uani 1 1 d . . . O5 O 0.0528(2) -0.1720(5) 0.3090(2) 0.0825(8) Uani 1 1 d . . . C11 C -0.0213(4) -0.2358(9) 0.3864(3) 0.1111(17) Uani 1 1 d . . . H11A H 0.0048 -0.1562 0.4458 0.167 Uiso 1 1 calc R . . H11B H -0.0146 -0.3956 0.3977 0.167 Uiso 1 1 calc R . . H11C H -0.1037 -0.1980 0.3673 0.167 Uiso 1 1 calc R . . C12 C 0.2635(3) 0.2749(7) 0.3130(3) 0.0621(10) Uani 1 1 d . . . H12 H 0.2274 0.4167 0.3084 0.074 Uiso 1 1 calc R . . C13 C 0.3235(3) 0.2169(7) 0.3973(3) 0.0622(10) Uani 1 1 d . . . H13 H 0.3619 0.0772 0.3979 0.075 Uiso 1 1 calc R . . C14 C 0.3369(3) 0.3453(7) 0.4894(3) 0.0608(10) Uani 1 1 d . . . C15 C 0.4041(3) 0.2528(8) 0.5699(3) 0.0772(12) Uani 1 1 d . . . H15 H 0.4417 0.1136 0.5638 0.093 Uiso 1 1 calc R . . C16 C 0.4157(4) 0.3652(10) 0.6587(3) 0.0933(15) Uani 1 1 d . . . H16 H 0.4608 0.3015 0.7122 0.112 Uiso 1 1 calc R . . C17 C 0.3617(5) 0.5686(12) 0.6687(4) 0.1038(17) Uani 1 1 d . . . H17 H 0.3695 0.6425 0.7292 0.125 Uiso 1 1 calc R . . C18 C 0.2952(4) 0.6669(9) 0.5901(4) 0.0964(15) Uani 1 1 d . . . H18 H 0.2586 0.8067 0.5970 0.116 Uiso 1 1 calc R . . C19 C 0.2841(4) 0.5523(8) 0.5002(3) 0.0747(11) Uani 1 1 d . . . H19 H 0.2401 0.6176 0.4466 0.090 Uiso 1 1 calc R . . loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_23 _atom_site_aniso_U_13 _atom_site_aniso_U_12 N1 0.0561(18) 0.066(2) 0.0620(18) -0.0027(16) -0.0003(15) 0.0097(17) C1 0.058(2) 0.081(3) 0.075(3) 0.001(2) 0.0043(19) 0.004(2) C2 0.070(3) 0.059(2) 0.075(2) -0.010(2) 0.002(2) 0.000(2) O1 0.079(2) 0.077(2) 0.125(2) -0.012(2) -0.0086(16) -0.0067(18) C3 0.063(3) 0.061(3) 0.098(3) -0.008(2) -0.007(2) 0.010(2) C4 0.066(2) 0.053(2) 0.065(2) -0.0111(19) -0.0090(18) 0.0111(19) C5 0.054(2) 0.072(3) 0.092(3) -0.003(2) -0.003(2) 0.008(2) C6 0.060(2) 0.057(2) 0.081(3) -0.011(2) 0.001(2) 0.002(2) C7 0.060(2) 0.055(3) 0.065(2) -0.0078(19) 0.0075(19) 0.0095(19) C8 0.086(3) 0.064(3) 0.089(3) -0.006(3) -0.012(2) 0.017(3) O2 0.237(5) 0.237(6) 0.122(3) -0.063(4) -0.091(3) 0.157(5) O3 0.096(2) 0.102(2) 0.0770(19) -0.0142(17) 0.0174(15) 0.020(2) C9 0.125(4) 0.164(5) 0.072(3) -0.039(3) 0.027(3) 0.014(4) C10 0.061(3) 0.060(3) 0.105(3) -0.006(3) 0.009(2) 0.003(2) O4 0.101(2) 0.073(2) 0.168(3) -0.002(2) 0.060(2) 0.016(2) O5 0.0828(19) 0.075(2) 0.092(2) 0.0042(17) 0.0201(15) 0.0108(16) C11 0.110(4) 0.105(4) 0.123(4) 0.011(4) 0.037(3) -0.002(3) C12 0.064(2) 0.050(2) 0.073(2) -0.005(2) 0.0096(19) 0.0069(19) C13 0.060(2) 0.058(3) 0.069(3) -0.006(2) 0.0093(19) 0.0053(19) C14 0.058(2) 0.059(3) 0.065(2) -0.002(2) 0.0089(19) -0.004(2) C15 0.069(3) 0.092(3) 0.071(3) -0.002(3) 0.007(2) -0.007(3) C16 0.077(3) 0.127(5) 0.076(3) -0.003(3) 0.007(2) -0.026(3) C17 0.089(4) 0.135(5) 0.089(4) -0.039(4) 0.018(3) -0.028(4) C18 0.079(3) 0.095(4) 0.117(4) -0.041(3) 0.018(3) -0.007(3) C19 0.070(3) 0.074(3) 0.081(3) -0.016(3) 0.009(2) 0.003(3) _geom_special_details ; All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes. ; loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_distance _geom_bond_site_symmetry_2 _geom_bond_publ_flag N1 C1 1.471(5) . ? N1 C7 1.473(4) . ? N1 C4 1.490(4) . ? C1 C2 1.516(5) . ? C1 H1A 0.9700 . ? C1 H1B 0.9700 . ? C2 O1 1.429(5) . ? C2 C3 1.511(5) . ? C2 H2 0.9800 . ? O1 H1 0.8200 . ? C3 C4 1.519(6) . ? C3 H3A 0.9700 . ? C3 H3B 0.9700 . ? C4 C5 1.522(5) . ? C4 C8 1.525(5) . ? C5 C6 1.513(5) . ? C5 H5A 0.9700 . ? C5 H5B 0.9700 . ? C6 C10 1.490(5) . ? C6 C7 1.549(5) . ? C6 H6 0.9800 . ? C7 C12 1.499(5) . ? C7 H7 0.9800 . ? C8 O2 1.167(5) . ? C8 O3 1.275(5) . ? O3 C9 1.468(5) . ? C9 H9A 0.9600 . ? C9 H9B 0.9600 . ? C9 H9C 0.9600 . ? C10 O4 1.198(5) . ? C10 O5 1.329(5) . ? O5 C11 1.440(5) . ? C11 H11A 0.9600 . ? C11 H11B 0.9600 . ? C11 H11C 0.9600 . ? C12 C13 1.326(4) . ? C12 H12 0.9300 . ? C13 C14 1.463(5) . ? C13 H13 0.9300 . ? C14 C19 1.371(5) . ? C14 C15 1.390(5) . ? C15 C16 1.376(6) . ? C15 H15 0.9300 . ? C16 C17 1.357(7) . ? C16 H16 0.9300 . ? C17 C18 1.380(7) . ? C17 H17 0.9300 . ? C18 C19 1.396(6) . ? C18 H18 0.9300 . ? C19 H19 0.9300 . ? loop_ _geom_angle_atom_site_label_1 _geom_angle_atom_site_label_2 _geom_angle_atom_site_label_3 _geom_angle _geom_angle_site_symmetry_1 _geom_angle_site_symmetry_3 _geom_angle_publ_flag C1 N1 C7 118.7(3) . . ? C1 N1 C4 108.2(3) . . ? C7 N1 C4 109.1(3) . . ? N1 C1 C2 106.9(3) . . ? N1 C1 H1A 110.3 . . ? C2 C1 H1A 110.3 . . ? N1 C1 H1B 110.3 . . ? C2 C1 H1B 110.3 . . ? H1A C1 H1B 108.6 . . ? O1 C2 C3 114.1(3) . . ? O1 C2 C1 110.6(3) . . ? C3 C2 C1 102.2(3) . . ? O1 C2 H2 109.9 . . ? C3 C2 H2 109.9 . . ? C1 C2 H2 109.9 . . ? C2 O1 H1 109.5 . . ? C2 C3 C4 104.1(3) . . ? C2 C3 H3A 110.9 . . ? C4 C3 H3A 110.9 . . ? C2 C3 H3B 110.9 . . ? C4 C3 H3B 110.9 . . ? H3A C3 H3B 109.0 . . ? N1 C4 C3 104.3(3) . . ? N1 C4 C5 105.8(3) . . ? C3 C4 C5 116.2(3) . . ? N1 C4 C8 112.5(3) . . ? C3 C4 C8 107.9(3) . . ? C5 C4 C8 110.0(3) . . ? C6 C5 C4 103.6(3) . . ? C6 C5 H5A 111.0 . . ? C4 C5 H5A 111.0 . . ? C6 C5 H5B 111.0 . . ? C4 C5 H5B 111.0 . . ? H5A C5 H5B 109.0 . . ? C10 C6 C5 114.7(3) . . ? C10 C6 C7 113.9(3) . . ? C5 C6 C7 102.9(3) . . ? C10 C6 H6 108.3 . . ? C5 C6 H6 108.3 . . ? C7 C6 H6 108.3 . . ? N1 C7 C12 117.0(3) . . ? N1 C7 C6 101.2(3) . . ? C12 C7 C6 111.8(3) . . ? N1 C7 H7 108.8 . . ? C12 C7 H7 108.8 . . ? C6 C7 H7 108.8 . . ? O2 C8 O3 122.2(4) . . ? O2 C8 C4 122.5(4) . . ? O3 C8 C4 115.2(4) . . ? C8 O3 C9 115.1(4) . . ? O3 C9 H9A 109.5 . . ? O3 C9 H9B 109.5 . . ? H9A C9 H9B 109.5 . . ? O3 C9 H9C 109.5 . . ? H9A C9 H9C 109.5 . . ? H9B C9 H9C 109.5 . . ? O4 C10 O5 123.0(4) . . ? O4 C10 C6 126.0(5) . . ? O5 C10 C6 110.9(4) . . ? C10 O5 C11 117.0(3) . . ? O5 C11 H11A 109.5 . . ? O5 C11 H11B 109.5 . . ? H11A C11 H11B 109.5 . . ? O5 C11 H11C 109.5 . . ? H11A C11 H11C 109.5 . . ? H11B C11 H11C 109.5 . . ? C13 C12 C7 122.9(4) . . ? C13 C12 H12 118.5 . . ? C7 C12 H12 118.5 . . ? C12 C13 C14 128.0(4) . . ? C12 C13 H13 116.0 . . ? C14 C13 H13 116.0 . . ? C19 C14 C15 118.4(4) . . ? C19 C14 C13 122.7(4) . . ? C15 C14 C13 118.9(4) . . ? C16 C15 C14 120.6(4) . . ? C16 C15 H15 119.7 . . ? C14 C15 H15 119.7 . . ? C17 C16 C15 120.3(5) . . ? C17 C16 H16 119.9 . . ? C15 C16 H16 119.9 . . ? C16 C17 C18 120.8(5) . . ? C16 C17 H17 119.6 . . ? C18 C17 H17 119.6 . . ? C17 C18 C19 118.6(5) . . ? C17 C18 H18 120.7 . . ? C19 C18 H18 120.7 . . ? C14 C19 C18 121.3(4) . . ? C14 C19 H19 119.4 . . ? C18 C19 H19 119.4 . . ? _diffrn_measured_fraction_theta_max 0.992 _diffrn_reflns_theta_full 25.06 _diffrn_measured_fraction_theta_full 0.992 _refine_diff_density_max 0.165 _refine_diff_density_min -0.181 _refine_diff_density_rms 0.030 _database_code_depnum_ccdc_archive 'CCDC 961250' ####################################################################### # # Cambridge Crystallographic Data Centre # CCDC # ####################################################################### # # This CIF contains data from an original supplementary publication # deposited with the CCDC, and may include chemical, crystal, # experimental, refinement, atomic coordinates, # anisotropic displacement parameters and molecular geometry data, # as required by the journal to which it was submitted. # # This CIF is provided on the understanding that it is used for bona # fide research purposes only. It may contain copyright material # of the CCDC or of third parties, and may not be copied or further # disseminated in any form, whether machine-readable or not, # except for the purpose of generating routine backup copies # on your local computer system. # # For further information on the CCDC, data deposition and # data retrieval see: # www.ccdc.cam.ac.uk # # Bona fide researchers may freely download Mercury and enCIFer # from this site to visualise CIF-encoded structures and # to carry out CIF format checking respectively. # data_x _audit_creation_method SHELXL-97 _chemical_name_systematic ; ? ; _chemical_name_common ? _chemical_melting_point ? _chemical_formula_moiety 'C19 H23 N O4' _chemical_formula_sum 'C19 H23 N O4' _chemical_formula_weight 329.38 loop_ _atom_type_symbol _atom_type_description _atom_type_scat_dispersion_real _atom_type_scat_dispersion_imag _atom_type_scat_source C C 0.0033 0.0016 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' H H 0.0000 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' N N 0.0061 0.0033 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' O O 0.0106 0.0060 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' _symmetry_cell_setting monoclinic _symmetry_space_group_name_H-M 'P 21/n' loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x+1/2, y+1/2, -z+1/2' '-x, -y, -z' 'x-1/2, -y-1/2, z-1/2' _cell_length_a 10.2542(17) _cell_length_b 24.002(4) _cell_length_c 14.842(2) _cell_angle_alpha 90.00 _cell_angle_beta 104.390(5) _cell_angle_gamma 90.00 _cell_volume 3538.3(10) _cell_formula_units_Z 8 _cell_measurement_temperature 297(1) _cell_measurement_reflns_used 780 _cell_measurement_theta_min 2.21 _cell_measurement_theta_max 13.91 _exptl_crystal_description plate _exptl_crystal_colour colorless _exptl_crystal_size_max 0.16 _exptl_crystal_size_mid 0.12 _exptl_crystal_size_min 0.05 _exptl_crystal_density_meas ? _exptl_crystal_density_diffrn 1.237 _exptl_crystal_density_method 'not measured' _exptl_crystal_F_000 1408 _exptl_absorpt_coefficient_mu 0.086 _exptl_absorpt_correction_type multi-scan _exptl_absorpt_correction_T_min 0.5235 _exptl_absorpt_correction_T_max 0.9957 _exptl_absorpt_process_details 'Bruker/Siemens SADABS V2.03' _exptl_special_details ; ? ; _diffrn_ambient_temperature 297(1) _diffrn_radiation_wavelength 0.71073 _diffrn_radiation_type MoK\a _diffrn_radiation_source 'fine-focus sealed tube' _diffrn_radiation_monochromator graphite _diffrn_measurement_device_type 'CCD area detector' _diffrn_measurement_method 'phi and omega scans' _diffrn_detector_area_resol_mean ? _diffrn_standards_number ? _diffrn_standards_interval_count ? _diffrn_standards_interval_time ? _diffrn_standards_decay_% ? _diffrn_reflns_number 30056 _diffrn_reflns_av_R_equivalents 0.1955 _diffrn_reflns_av_sigmaI/netI 0.1648 _diffrn_reflns_limit_h_min -12 _diffrn_reflns_limit_h_max 12 _diffrn_reflns_limit_k_min -28 _diffrn_reflns_limit_k_max 28 _diffrn_reflns_limit_l_min -17 _diffrn_reflns_limit_l_max 17 _diffrn_reflns_theta_min 1.65 _diffrn_reflns_theta_max 25.13 _reflns_number_total 6296 _reflns_number_gt 2144 _reflns_threshold_expression I>2\s(I) _computing_data_collection 'Bruker SMART V5.625' _computing_cell_refinement 'Bruker SMART V5.625' _computing_data_reduction 'Bruker SAINT V6.28A' _computing_structure_solution 'SHELXS-97 (Sheldrick, 1997)' _computing_structure_refinement 'SHELXL-97 (Sheldrick, 1997)' _computing_molecular_graphics 'SHELXTL Rel. 6.12/V (Siemens, 1996)' _computing_publication_material 'SHELX-97 (Sheldrick, 1997)' _refine_special_details ; Refinement of F^2^ against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F^2^, conventional R-factors R are based on F, with F set to zero for negative F^2^. The threshold expression of F^2^ > 2sigma(F^2^) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F^2^ are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. ; _refine_ls_structure_factor_coef Fsqd _refine_ls_matrix_type full _refine_ls_weighting_scheme calc _refine_ls_weighting_details 'calc w=1/[\s^2^(Fo^2^)+(0.0501P)^2^] where P=(Fo^2^+2Fc^2^)/3' _atom_sites_solution_primary direct _atom_sites_solution_secondary difmap _atom_sites_solution_hydrogens geom _refine_ls_hydrogen_treatment constr _refine_ls_extinction_method none _refine_ls_extinction_coef ? _refine_ls_number_reflns 6296 _refine_ls_number_parameters 437 _refine_ls_number_restraints 0 _refine_ls_R_factor_all 0.2355 _refine_ls_R_factor_gt 0.0691 _refine_ls_wR_factor_ref 0.1800 _refine_ls_wR_factor_gt 0.1245 _refine_ls_goodness_of_fit_ref 0.923 _refine_ls_restrained_S_all 0.923 _refine_ls_shift/su_max 0.037 _refine_ls_shift/su_mean 0.001 loop_ _atom_site_label _atom_site_type_symbol _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv _atom_site_adp_type _atom_site_occupancy _atom_site_symmetry_multiplicity _atom_site_calc_flag _atom_site_refinement_flags _atom_site_disorder_assembly _atom_site_disorder_group N1 N 0.8460(4) 0.81767(15) 0.8689(3) 0.0601(11) Uani 1 1 d . . . C1 C 0.8557(4) 0.84451(18) 0.9606(3) 0.0550(13) Uani 1 1 d . . . H1 H 0.9508 0.8508 0.9914 0.066 Uiso 1 1 calc R . . C2 C 0.7999(5) 0.79763(18) 1.0129(3) 0.0559(13) Uani 1 1 d . . . H2 H 0.8678 0.7682 1.0299 0.067 Uiso 1 1 calc R . . C3 C 0.6821(5) 0.7757(2) 0.9393(3) 0.0702(15) Uani 1 1 d . . . H3A H 0.6028 0.7986 0.9348 0.084 Uiso 1 1 calc R . . H3B H 0.6613 0.7376 0.9527 0.084 Uiso 1 1 calc R . . C4 C 0.7304(5) 0.7788(2) 0.8492(3) 0.0591(13) Uani 1 1 d . . . C5 C 0.6275(6) 0.8034(2) 0.7633(4) 0.0944(19) Uani 1 1 d . . . H5A H 0.5992 0.7753 0.7155 0.113 Uiso 1 1 calc R . . H5B H 0.5488 0.8176 0.7808 0.113 Uiso 1 1 calc R . . C6 C 0.6992(7) 0.8485(3) 0.7300(4) 0.122(2) Uani 1 1 d . . . H6A H 0.6508 0.8832 0.7302 0.146 Uiso 1 1 calc R . . H6B H 0.7032 0.8408 0.6666 0.146 Uiso 1 1 calc R . . C7 C 0.8366(6) 0.8541(2) 0.7895(4) 0.0813(17) Uani 1 1 d . . . H7A H 0.9021 0.8433 0.7555 0.098 Uiso 1 1 calc R . . H7B H 0.8538 0.8924 0.8098 0.098 Uiso 1 1 calc R . . C8 C 0.7802(5) 0.89785(19) 0.9594(3) 0.0577(13) Uani 1 1 d . . . H8 H 0.6892 0.8981 0.9290 0.069 Uiso 1 1 calc R . . C9 C 0.8339(5) 0.94485(19) 0.9985(3) 0.0562(13) Uani 1 1 d . . . H9 H 0.9249 0.9434 1.0285 0.067 Uiso 1 1 calc R . . C10 C 0.7675(5) 0.99911(19) 1.0003(3) 0.0524(13) Uani 1 1 d . . . C11 C 0.6401(5) 1.0111(2) 0.9487(3) 0.0638(14) Uani 1 1 d . . . H11 H 0.5916 0.9838 0.9100 0.077 Uiso 1 1 calc R . . C12 C 0.5815(5) 1.0626(2) 0.9528(4) 0.0738(16) Uani 1 1 d . . . H12 H 0.4948 1.0698 0.9174 0.089 Uiso 1 1 calc R . . C13 C 0.6527(6) 1.1029(2) 1.0094(4) 0.0763(16) Uani 1 1 d . . . H13 H 0.6138 1.1376 1.0127 0.092 Uiso 1 1 calc R . . C14 C 0.7800(6) 1.0926(2) 1.0609(4) 0.0791(17) Uani 1 1 d . . . H14 H 0.8280 1.1202 1.0992 0.095 Uiso 1 1 calc R . . C15 C 0.8374(5) 1.0410(2) 1.0561(3) 0.0664(15) Uani 1 1 d . . . H15 H 0.9246 1.0343 1.0910 0.080 Uiso 1 1 calc R . . C16 C 0.7656(7) 0.81874(19) 1.0998(4) 0.0625(15) Uani 1 1 d . . . O1 O 0.6563(4) 0.82639(15) 1.1108(3) 0.0873(13) Uani 1 1 d . . . O2 O 0.8805(4) 0.82904(14) 1.1645(3) 0.0860(11) Uani 1 1 d . . . C17 C 0.8648(6) 0.8537(2) 1.2508(4) 0.122(2) Uani 1 1 d . . . H17A H 0.8256 0.8901 1.2384 0.183 Uiso 1 1 calc R . . H17B H 0.9513 0.8567 1.2941 0.183 Uiso 1 1 calc R . . H17C H 0.8071 0.8306 1.2769 0.183 Uiso 1 1 calc R . . C18 C 0.7736(6) 0.7219(2) 0.8226(4) 0.0680(15) Uani 1 1 d . . . O3 O 0.7387(5) 0.67875(16) 0.8473(3) 0.1196(17) Uani 1 1 d . . . O4 O 0.8559(4) 0.72540(14) 0.7675(3) 0.0871(12) Uani 1 1 d . . . C19 C 0.8962(6) 0.6733(2) 0.7322(4) 0.109(2) Uani 1 1 d . . . H19A H 0.9307 0.6484 0.7832 0.163 Uiso 1 1 calc R . . H19B H 0.9648 0.6805 0.7000 0.163 Uiso 1 1 calc R . . H19C H 0.8197 0.6566 0.6903 0.163 Uiso 1 1 calc R . . N2 N 0.8138(3) 1.05412(13) 0.3916(2) 0.0469(10) Uani 1 1 d . . . C20 C 0.8167(4) 1.02727(17) 0.4821(3) 0.0453(11) Uani 1 1 d . . . H20 H 0.9098 1.0267 0.5199 0.054 Uiso 1 1 calc R . . C21 C 0.7368(4) 1.07070(18) 0.5234(3) 0.0479(12) Uani 1 1 d . . . H21 H 0.7913 1.1046 0.5378 0.058 Uiso 1 1 calc R . . C22 C 0.6173(4) 1.08283(18) 0.4410(3) 0.0556(13) Uani 1 1 d . . . H22A H 0.5754 1.1182 0.4486 0.067 Uiso 1 1 calc R . . H22B H 0.5504 1.0535 0.4328 0.067 Uiso 1 1 calc R . . C23 C 0.6840(4) 1.08472(18) 0.3597(3) 0.0508(12) Uani 1 1 d . . . C24 C 0.6053(4) 1.05566(18) 0.2690(3) 0.0588(13) Uani 1 1 d . . . H24A H 0.5160 1.0451 0.2739 0.071 Uiso 1 1 calc R . . H24B H 0.5965 1.0803 0.2161 0.071 Uiso 1 1 calc R . . C26 C 0.8284(4) 1.01812(19) 0.3152(3) 0.0593(13) Uani 1 1 d . . . H26A H 0.8758 0.9842 0.3394 0.071 Uiso 1 1 calc R . . H26B H 0.8788 1.0371 0.2770 0.071 Uiso 1 1 calc R . . C27 C 0.7604(4) 0.96946(18) 0.4781(3) 0.0481(12) Uani 1 1 d . . . H27 H 0.6681 0.9646 0.4550 0.058 Uiso 1 1 calc R . . C28 C 0.8358(4) 0.92521(19) 0.5060(3) 0.0544(13) Uani 1 1 d . . . H28 H 0.9267 0.9321 0.5319 0.065 Uiso 1 1 calc R . . C29 C 0.7946(5) 0.86630(19) 0.5013(3) 0.0497(12) Uani 1 1 d . . . C30 C 0.8929(5) 0.8261(2) 0.5295(3) 0.0665(14) Uani 1 1 d . . . H30 H 0.9826 0.8367 0.5498 0.080 Uiso 1 1 calc R . . C31 C 0.8591(6) 0.7703(2) 0.5278(4) 0.0804(17) Uani 1 1 d . . . H31 H 0.9262 0.7436 0.5471 0.097 Uiso 1 1 calc R . . C32 C 0.7285(7) 0.7540(2) 0.4981(4) 0.0789(17) Uani 1 1 d . . . H32 H 0.7059 0.7165 0.4977 0.095 Uiso 1 1 calc R . . C33 C 0.6297(5) 0.7936(2) 0.4685(3) 0.0724(16) Uani 1 1 d . . . H33 H 0.5403 0.7826 0.4479 0.087 Uiso 1 1 calc R . . C34 C 0.6622(5) 0.8492(2) 0.4692(3) 0.0601(14) Uani 1 1 d . . . H34 H 0.5950 0.8755 0.4480 0.072 Uiso 1 1 calc R . . C35 C 0.7022(5) 1.05095(18) 0.6107(3) 0.0508(13) Uani 1 1 d . . . O5 O 0.5931(4) 1.04314(14) 0.6221(2) 0.0732(11) Uani 1 1 d . . . O6 O 0.8157(3) 1.04402(13) 0.6779(2) 0.0709(10) Uani 1 1 d . . . C36 C 0.7995(5) 1.0262(2) 0.7671(3) 0.106(2) Uani 1 1 d . . . H36A H 0.7434 1.0524 0.7890 0.159 Uiso 1 1 calc R . . H36B H 0.8861 1.0244 0.8106 0.159 Uiso 1 1 calc R . . H36C H 0.7582 0.9901 0.7612 0.159 Uiso 1 1 calc R . . C37 C 0.7200(5) 1.1449(2) 0.3410(4) 0.0571(13) Uani 1 1 d . . . O7 O 0.7003(4) 1.18423(14) 0.3840(3) 0.0910(13) Uani 1 1 d . . . O8 O 0.7811(4) 1.14865(13) 0.2723(2) 0.0865(12) Uani 1 1 d . . . C38 C 0.8186(6) 1.20372(19) 0.2491(4) 0.095(2) Uani 1 1 d . . . H38A H 0.7406 1.2227 0.2129 0.143 Uiso 1 1 calc R . . H38B H 0.8850 1.2009 0.2137 0.143 Uiso 1 1 calc R . . H38C H 0.8551 1.2243 0.3052 0.143 Uiso 1 1 calc R . . C25 C 0.6867(5) 1.0046(2) 0.2583(3) 0.0702(15) Uani 1 1 d . . . H25A H 0.6856 0.9985 0.1935 0.084 Uiso 1 1 calc R . . H25B H 0.6519 0.9717 0.2823 0.084 Uiso 1 1 calc R . . loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_23 _atom_site_aniso_U_13 _atom_site_aniso_U_12 N1 0.075(3) 0.050(2) 0.056(3) 0.002(2) 0.018(2) 0.000(2) C1 0.057(3) 0.048(3) 0.060(4) -0.005(3) 0.015(3) 0.004(3) C2 0.066(4) 0.047(3) 0.055(3) 0.004(3) 0.016(3) -0.001(3) C3 0.078(4) 0.057(3) 0.079(4) -0.003(3) 0.025(3) 0.001(3) C4 0.067(4) 0.054(3) 0.052(3) 0.005(3) 0.008(3) 0.003(3) C5 0.105(5) 0.085(4) 0.081(5) 0.016(4) -0.002(4) 0.015(4) C6 0.118(6) 0.148(7) 0.095(5) 0.058(5) 0.018(5) 0.022(5) C7 0.117(5) 0.063(4) 0.073(4) 0.005(3) 0.041(4) 0.006(4) C8 0.062(3) 0.056(3) 0.052(3) -0.004(3) 0.008(3) -0.002(3) C9 0.062(3) 0.060(3) 0.044(3) -0.001(3) 0.008(2) -0.004(3) C10 0.074(4) 0.041(3) 0.045(3) 0.001(3) 0.020(3) -0.003(3) C11 0.072(4) 0.050(3) 0.065(4) -0.001(3) 0.009(3) 0.003(3) C12 0.076(4) 0.061(4) 0.082(4) 0.006(3) 0.015(3) 0.006(3) C13 0.100(5) 0.052(4) 0.083(5) 0.001(3) 0.034(4) 0.003(4) C14 0.117(5) 0.052(4) 0.068(4) -0.011(3) 0.023(4) -0.005(4) C15 0.079(4) 0.056(4) 0.060(4) -0.006(3) 0.010(3) -0.001(3) C16 0.086(5) 0.044(3) 0.057(4) 0.007(3) 0.018(4) 0.005(3) O1 0.093(3) 0.095(3) 0.085(3) 0.001(2) 0.044(3) 0.015(2) O2 0.107(3) 0.084(3) 0.065(3) -0.010(2) 0.017(2) 0.008(2) C17 0.177(7) 0.106(5) 0.088(5) -0.042(4) 0.042(5) -0.001(5) C18 0.094(5) 0.062(4) 0.047(4) 0.007(3) 0.017(3) 0.002(4) O3 0.198(5) 0.057(3) 0.129(4) 0.009(3) 0.089(3) -0.005(3) O4 0.141(4) 0.053(2) 0.081(3) 0.003(2) 0.052(3) 0.006(2) C19 0.171(6) 0.074(4) 0.092(5) -0.015(4) 0.057(4) 0.015(4) N2 0.056(3) 0.040(2) 0.047(3) -0.0018(19) 0.019(2) 0.002(2) C20 0.048(3) 0.044(3) 0.046(3) 0.003(2) 0.014(2) -0.001(2) C21 0.054(3) 0.046(3) 0.045(3) 0.000(2) 0.014(3) -0.002(2) C22 0.057(3) 0.051(3) 0.057(3) 0.001(2) 0.010(3) 0.005(3) C23 0.053(3) 0.052(3) 0.044(3) -0.001(2) 0.006(3) 0.000(3) C24 0.063(3) 0.059(3) 0.048(3) -0.009(3) 0.002(3) -0.001(3) C26 0.071(4) 0.056(3) 0.054(3) 0.002(3) 0.023(3) 0.004(3) C27 0.043(3) 0.050(3) 0.049(3) -0.001(2) 0.007(2) -0.001(2) C28 0.051(3) 0.051(3) 0.061(3) 0.003(3) 0.014(2) 0.000(3) C29 0.050(3) 0.051(3) 0.049(3) 0.008(2) 0.015(3) 0.001(3) C30 0.064(4) 0.054(4) 0.079(4) 0.003(3) 0.013(3) 0.004(3) C31 0.097(5) 0.050(4) 0.093(5) 0.005(3) 0.022(4) 0.007(3) C32 0.107(5) 0.040(3) 0.089(4) -0.003(3) 0.025(4) -0.008(4) C33 0.075(4) 0.060(4) 0.079(4) 0.000(3) 0.012(3) -0.012(3) C34 0.060(4) 0.047(3) 0.072(4) 0.002(3) 0.014(3) 0.002(3) C35 0.051(4) 0.048(3) 0.050(4) -0.001(2) 0.006(3) 0.002(3) O5 0.065(2) 0.096(3) 0.061(2) 0.0079(19) 0.021(2) -0.005(2) O6 0.075(3) 0.081(3) 0.053(2) 0.0139(19) 0.009(2) 0.0056(19) C36 0.142(6) 0.117(5) 0.056(4) 0.043(4) 0.017(4) 0.008(4) C37 0.068(4) 0.059(4) 0.042(3) 0.006(3) 0.009(3) 0.001(3) O7 0.147(4) 0.053(2) 0.084(3) -0.015(2) 0.049(3) 0.002(2) O8 0.153(4) 0.049(2) 0.073(3) -0.0004(19) 0.058(3) -0.011(2) C38 0.166(6) 0.052(4) 0.081(4) 0.007(3) 0.054(4) -0.024(4) C25 0.092(4) 0.065(4) 0.052(3) -0.013(3) 0.014(3) -0.004(3) _geom_special_details ; All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes. ; loop_ _geom_bond_atom_site_label_1 _geom_bond_atom_site_label_2 _geom_bond_distance _geom_bond_site_symmetry_2 _geom_bond_publ_flag N1 C7 1.452(5) . ? N1 C4 1.481(5) . ? N1 C1 1.486(5) . ? C1 C8 1.494(5) . ? C1 C2 1.554(6) . ? C2 C16 1.506(6) . ? C2 C3 1.509(6) . ? C3 C4 1.538(6) . ? C4 C18 1.518(7) . ? C4 C5 1.556(6) . ? C5 C6 1.460(7) . ? C6 C7 1.471(7) . ? C8 C9 1.324(5) . ? C9 C10 1.473(6) . ? C10 C11 1.371(6) . ? C10 C15 1.385(6) . ? C11 C12 1.383(6) . ? C12 C13 1.366(6) . ? C13 C14 1.361(6) . ? C14 C15 1.380(6) . ? C16 O1 1.186(5) . ? C16 O2 1.345(6) . ? O2 C17 1.456(6) . ? C18 O3 1.183(5) . ? C18 O4 1.316(6) . ? O4 C19 1.454(5) . ? N2 C26 1.462(5) . ? N2 C20 1.484(5) . ? N2 C23 1.490(5) . ? C20 C27 1.499(5) . ? C20 C21 1.543(5) . ? C21 C35 1.503(6) . ? C21 C22 1.528(5) . ? C22 C23 1.529(5) . ? C23 C37 1.533(6) . ? C23 C24 1.552(5) . ? C24 C25 1.513(5) . ? C26 C25 1.523(5) . ? C27 C28 1.318(5) . ? C28 C29 1.472(6) . ? C29 C30 1.383(5) . ? C29 C34 1.384(5) . ? C30 C31 1.382(6) . ? C31 C32 1.358(6) . ? C32 C33 1.379(6) . ? C33 C34 1.375(6) . ? C35 O5 1.187(5) . ? C35 O6 1.343(5) . ? O6 C36 1.438(5) . ? C37 O7 1.185(5) . ? C37 O8 1.325(5) . ? O8 C38 1.442(5) . ? loop_ _geom_angle_atom_site_label_1 _geom_angle_atom_site_label_2 _geom_angle_atom_site_label_3 _geom_angle _geom_angle_site_symmetry_1 _geom_angle_site_symmetry_3 _geom_angle_publ_flag C7 N1 C4 109.3(4) . . ? C7 N1 C1 117.3(4) . . ? C4 N1 C1 108.8(4) . . ? N1 C1 C8 116.3(4) . . ? N1 C1 C2 101.2(3) . . ? C8 C1 C2 111.9(4) . . ? C16 C2 C3 115.0(4) . . ? C16 C2 C1 112.2(4) . . ? C3 C2 C1 102.7(4) . . ? C2 C3 C4 103.9(4) . . ? N1 C4 C18 110.3(4) . . ? N1 C4 C3 105.9(4) . . ? C18 C4 C3 111.1(4) . . ? N1 C4 C5 105.6(4) . . ? C18 C4 C5 108.1(4) . . ? C3 C4 C5 115.6(4) . . ? C6 C5 C4 105.3(5) . . ? C5 C6 C7 110.6(5) . . ? N1 C7 C6 107.0(5) . . ? C9 C8 C1 124.5(4) . . ? C8 C9 C10 128.1(5) . . ? C11 C10 C15 117.5(5) . . ? C11 C10 C9 123.8(4) . . ? C15 C10 C9 118.8(5) . . ? C10 C11 C12 121.8(5) . . ? C13 C12 C11 119.2(5) . . ? C14 C13 C12 120.5(5) . . ? C13 C14 C15 119.7(5) . . ? C14 C15 C10 121.3(5) . . ? O1 C16 O2 124.3(5) . . ? O1 C16 C2 126.9(6) . . ? O2 C16 C2 108.8(5) . . ? C16 O2 C17 115.7(4) . . ? O3 C18 O4 122.6(5) . . ? O3 C18 C4 125.2(6) . . ? O4 C18 C4 112.2(5) . . ? C18 O4 C19 116.9(4) . . ? C26 N2 C20 117.5(3) . . ? C26 N2 C23 107.5(3) . . ? C20 N2 C23 108.5(3) . . ? N2 C20 C27 116.5(3) . . ? N2 C20 C21 99.9(3) . . ? C27 C20 C21 113.8(4) . . ? C35 C21 C22 115.8(4) . . ? C35 C21 C20 113.0(4) . . ? C22 C21 C20 102.2(3) . . ? C21 C22 C23 102.1(3) . . ? N2 C23 C22 105.9(3) . . ? N2 C23 C37 106.6(4) . . ? C22 C23 C37 110.2(4) . . ? N2 C23 C24 106.5(3) . . ? C22 C23 C24 115.6(4) . . ? C37 C23 C24 111.3(4) . . ? C25 C24 C23 105.9(4) . . ? N2 C26 C25 106.7(3) . . ? C28 C27 C20 122.9(4) . . ? C27 C28 C29 128.3(4) . . ? C30 C29 C34 118.4(4) . . ? C30 C29 C28 118.5(4) . . ? C34 C29 C28 123.1(4) . . ? C31 C30 C29 120.7(5) . . ? C32 C31 C30 120.4(5) . . ? C31 C32 C33 119.6(5) . . ? C34 C33 C32 120.6(5) . . ? C33 C34 C29 120.3(5) . . ? O5 C35 O6 123.3(5) . . ? O5 C35 C21 127.2(4) . . ? O6 C35 C21 109.5(4) . . ? C35 O6 C36 116.3(4) . . ? O7 C37 O8 122.5(5) . . ? O7 C37 C23 124.9(5) . . ? O8 C37 C23 112.6(4) . . ? C37 O8 C38 116.8(4) . . ? C24 C25 C26 104.2(4) . . ? _diffrn_measured_fraction_theta_max 0.996 _diffrn_reflns_theta_full 25.13 _diffrn_measured_fraction_theta_full 0.996 _refine_diff_density_max 0.156 _refine_diff_density_min -0.192 _refine_diff_density_rms 0.039 _database_code_depnum_ccdc_archive 'CCDC 961570'