# Electronic Supplementary Material (ESI) for Organic Chemistry Frontiers.
# This journal is © the Partner Organisations 2016

####################################################################### 
# 
# This file contains crystal structure data downloaded from the 
# Cambridge Structural Database (CSD) hosted by the Cambridge 
# Crystallographic Data Centre (CCDC).
# 
# Full information about CCDC data access policies and citation 
# guidelines are available at http://www.ccdc.cam.ac.uk/access/V1 
# 
# Audit and citation data items may have been added by the CCDC. 
# Please retain this information to preserve the provenance of 
# this file and to allow appropriate attribution of the data. 
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data_mo_60511c
_audit_block_doi                 10.5517/ccdc.csd.cc1m2c24
_database_code_depnum_ccdc_archive 'CCDC 1491815'
_audit_update_record             
;
2016-07-10 deposited with the CCDC.
2016-10-26 downloaded from the CCDC.
;

_audit_creation_method           SHELXL-2014/7
_shelx_SHELXL_version_number     2014/7
_chemical_name_systematic        ?
_chemical_name_common            ?
_chemical_melting_point          ?
_chemical_formula_moiety         ?
_chemical_formula_sum            'C25 H21 N O2 S'
_chemical_formula_weight         399.49

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'
S S 0.1246 0.1234 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'

_space_group_crystal_system      trigonal
_space_group_IT_number           161
_space_group_name_H-M_alt        'R 3 c :H'
_space_group_name_Hall           'R 3 -2"c'

_shelx_space_group_comment       
; 
The symmetry employed for this shelxl refinement is uniquely defined 
by the following loop, which should always be used as a source of 
symmetry information in preference to the above space-group names. 
They are only intended as comments. 
;

loop_
_space_group_symop_operation_xyz
'x, y, z'
'-y, x-y, z'
'-x+y, -x, z'
'-y, -x, z+1/2'
'-x+y, y, z+1/2'
'x, x-y, z+1/2'
'x+2/3, y+1/3, z+1/3'
'-y+2/3, x-y+1/3, z+1/3'
'-x+y+2/3, -x+1/3, z+1/3'
'-y+2/3, -x+1/3, z+5/6'
'-x+y+2/3, y+1/3, z+5/6'
'x+2/3, x-y+1/3, z+5/6'
'x+1/3, y+2/3, z+2/3'
'-y+1/3, x-y+2/3, z+2/3'
'-x+y+1/3, -x+2/3, z+2/3'
'-y+1/3, -x+2/3, z+7/6'
'-x+y+1/3, y+2/3, z+7/6'
'x+1/3, x-y+2/3, z+7/6'

_cell_length_a                   33.922(6)
_cell_length_b                   33.922(6)
_cell_length_c                   11.008(2)
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_volume                     10970(5)
_cell_formula_units_Z            18
_cell_measurement_temperature    173(2)
_cell_measurement_reflns_used    3675
_cell_measurement_theta_min      2.40
_cell_measurement_theta_max      22.06

_exptl_crystal_description       block
_exptl_crystal_colour            white
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    ?
_exptl_crystal_density_diffrn    1.088
_exptl_crystal_F_000             3780
_exptl_transmission_factor_min   ?
_exptl_transmission_factor_max   ?
_exptl_crystal_size_max          0.650
_exptl_crystal_size_mid          0.120
_exptl_crystal_size_min          0.110
_exptl_absorpt_coefficient_mu    0.150
_shelx_estimated_absorpt_T_min   0.909
_shelx_estimated_absorpt_T_max   0.984
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_correction_T_min  0.586
_exptl_absorpt_correction_T_max  0.746
_exptl_absorpt_process_details   sadabs
_exptl_absorpt_special_details   ?
_diffrn_ambient_temperature      173(2)
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_type           MoK\a
_diffrn_source                   ?
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       'φ and ω scans'
_diffrn_detector_area_resol_mean ?
_diffrn_reflns_number            26825
_diffrn_reflns_av_unetI/netI     0.1223
_diffrn_reflns_av_R_equivalents  0.1586
_diffrn_reflns_limit_h_min       -44
_diffrn_reflns_limit_h_max       43
_diffrn_reflns_limit_k_min       -43
_diffrn_reflns_limit_k_max       43
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_theta_min         1.201
_diffrn_reflns_theta_max         27.470
_diffrn_reflns_theta_full        25.242
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measured_fraction_theta_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.992
_diffrn_reflns_point_group_measured_fraction_full 0.998
_reflns_number_total             5552
_reflns_number_gt                3251
_reflns_threshold_expression     'I > 2σ(I)'
_reflns_Friedel_coverage         0.976
_reflns_Friedel_fraction_max     0.984
_reflns_Friedel_fraction_full    0.995

_reflns_special_details          
; 
 Reflections were merged by SHELXL according to the crystal 
 class for the calculation of statistics and refinement. 
  
 _reflns_Friedel_fraction is defined as the number of unique 
 Friedel pairs measured divided by the number that would be 
 possible theoretically, ignoring centric projections and 
 systematic absences. 
;

_computing_data_collection       'Bruker APEX2'
_computing_cell_refinement       'Bruker SAINT'
_computing_data_reduction        'Bruker SAINT'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_refine_special_details          ?
_refine_ls_structure_factor_coef Fsqd
_refine_ls_matrix_type           full
_refine_ls_weighting_scheme      calc
_refine_ls_weighting_details     
'w=1/[σ²(Fo²)+(0.0619P)²] where P=(Fo²+2Fc²)/3'
_atom_sites_solution_primary     ?
_atom_sites_solution_secondary   ?
_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 x determined using 1143 quotients [(I+)-(I-)]/[(I+)+(I-)] 
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259). 
;
_refine_ls_abs_structure_Flack   -0.31(13)
_chemical_absolute_configuration ?
_refine_ls_number_reflns         5552
_refine_ls_number_parameters     263
_refine_ls_number_restraints     1
_refine_ls_R_factor_all          0.0953
_refine_ls_R_factor_gt           0.0620
_refine_ls_wR_factor_ref         0.1442
_refine_ls_wR_factor_gt          0.1336
_refine_ls_goodness_of_fit_ref   0.925
_refine_ls_restrained_S_all      0.925
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.001

loop_
_platon_squeeze_void_nr
_platon_squeeze_void_average_x
_platon_squeeze_void_average_y
_platon_squeeze_void_average_z
_platon_squeeze_void_volume
_platon_squeeze_void_count_electrons
_platon_squeeze_void_content
1 0.000 0.000 -0.004 997 292 ' '
2 0.333 0.667 0.830 1007 292 ' '
3 0.667 0.333 0.497 1001 292 ' '
_platon_squeeze_void_probe_radius 1.20
_platon_squeeze_details          ?

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_site_symmetry_order
_atom_site_calc_flag
_atom_site_refinement_flags_posn
_atom_site_refinement_flags_adp
_atom_site_refinement_flags_occupancy
_atom_site_disorder_assembly
_atom_site_disorder_group
S1 S 0.99988(4) 0.79557(4) 0.04832(12) 0.0346(3) Uani 1 1 d . . . . .
O1 O 1.04592(11) 0.81618(13) 0.0870(4) 0.0449(10) Uani 1 1 d . . . . .
O2 O 0.99041(13) 0.79596(13) -0.0776(3) 0.0441(10) Uani 1 1 d . . . . .
N1 N 0.97683(14) 0.82027(14) 0.1226(4) 0.0345(10) Uani 1 1 d . . . . .
C1 C 0.93214(16) 0.81306(17) 0.0859(5) 0.0354(12) Uani 1 1 d . . . . .
C2 C 0.89162(15) 0.76588(16) 0.1201(5) 0.0301(11) Uani 1 1 d . . . . .
H2 H 0.8906 0.7607 0.2097 0.036 Uiso 1 1 calc R U . . .
C3 C 0.84652(16) 0.75936(17) 0.0748(5) 0.0330(12) Uani 1 1 d . . . . .
C4 C 0.82144(17) 0.77862(18) 0.1166(5) 0.0365(13) Uani 1 1 d . . . . .
H4 H 0.8318 0.7994 0.1828 0.044 Uiso 1 1 calc R U . . .
C5 C 0.78044(17) 0.76651(18) 0.0582(5) 0.0371(13) Uani 1 1 d . . . . .
H5 H 0.7625 0.7791 0.0854 0.045 Uiso 1 1 calc R U . . .
C6 C 0.76537(18) 0.73648(18) -0.0386(5) 0.0392(13) Uani 1 1 d . . . . .
H6 H 0.7379 0.7296 -0.0787 0.047 Uiso 1 1 calc R U . . .
C7 C 0.78961(16) 0.71668(18) -0.0771(5) 0.0339(12) Uani 1 1 d . . . . .
H7 H 0.7790 0.6960 -0.1434 0.041 Uiso 1 1 calc R U . . .
C8 C 0.83013(16) 0.72698(17) -0.0186(4) 0.0305(11) Uani 1 1 d . . . . .
C9 C 0.86099(15) 0.70874(16) -0.0324(4) 0.0274(11) Uani 1 1 d . . . . .
C10 C 0.89454(15) 0.72834(16) 0.0505(4) 0.0280(11) Uani 1 1 d . . . . .
C11 C 0.92616(17) 0.71143(16) 0.0822(4) 0.0314(11) Uani 1 1 d . . . . .
C12 C 0.90704(19) 0.66485(18) 0.1083(5) 0.0380(13) Uani 1 1 d . . . . .
H12 H 0.8752 0.6451 0.0991 0.046 Uiso 1 1 calc R U . . .
C13 C 0.9336(2) 0.6475(2) 0.1468(5) 0.0412(14) Uani 1 1 d . . . . .
H13 H 0.9197 0.6160 0.1650 0.049 Uiso 1 1 calc R U . . .
C14 C 0.9790(2) 0.6741(2) 0.1595(5) 0.0443(14) Uani 1 1 d . . . . .
H14 H 0.9970 0.6616 0.1868 0.053 Uiso 1 1 calc R U . . .
C15 C 0.99879(18) 0.7193(2) 0.1326(5) 0.0392(13) Uani 1 1 d . . . . .
H15 H 1.0308 0.7382 0.1396 0.047 Uiso 1 1 calc R U . . .
C16 C 0.97236(16) 0.73785(17) 0.0948(4) 0.0303(11) Uani 1 1 d . . . . .
C17 C 0.98651(18) 0.82726(19) 0.2540(5) 0.0432(13) Uani 1 1 d . . . . .
H17A H 0.9765 0.8478 0.2856 0.065 Uiso 1 1 calc R U . . .
H17B H 1.0193 0.8407 0.2675 0.065 Uiso 1 1 calc R U . . .
H17C H 0.9702 0.7979 0.2961 0.065 Uiso 1 1 calc R U . . .
C18 C 0.9311(2) 0.8355(2) -0.0278(6) 0.0557(17) Uani 1 1 d . . . . .
H18A H 0.9597 0.8520 -0.0748 0.067 Uiso 1 1 calc R U . . .
H18B H 0.9030 0.8204 -0.0774 0.067 Uiso 1 1 calc R U . . .
C19 C 0.9288(2) 0.85455(19) 0.0899(7) 0.0590(19) Uani 1 1 d . . . . .
H19A H 0.8993 0.8515 0.1142 0.071 Uiso 1 1 calc R U . . .
H19B H 0.9560 0.8831 0.1168 0.071 Uiso 1 1 calc R U . . .
C20 C 0.85582(17) 0.67516(17) -0.1261(4) 0.0310(11) Uani 1 1 d . . . . .
C21 C 0.81614(18) 0.63596(17) -0.1476(5) 0.0376(12) Uani 1 1 d . . . . .
H21 H 0.7902 0.6293 -0.1000 0.045 Uiso 1 1 calc R U . . .
C22 C 0.8124(2) 0.6056(2) -0.2359(5) 0.0484(15) Uani 1 1 d . . . . .
H22 H 0.7841 0.5787 -0.2502 0.058 Uiso 1 1 calc R U . . .
C23 C 0.8502(2) 0.6148(2) -0.3035(5) 0.0503(16) Uani 1 1 d . . . . .
H23 H 0.8482 0.5938 -0.3638 0.060 Uiso 1 1 calc R U . . .
C24 C 0.8901(2) 0.6534(2) -0.2844(5) 0.0483(16) Uani 1 1 d . . . . .
H24 H 0.9156 0.6596 -0.3332 0.058 Uiso 1 1 calc R U . . .
C25 C 0.89474(19) 0.68426(19) -0.1958(5) 0.0380(13) Uani 1 1 d . . . . .
H25 H 0.9233 0.7109 -0.1817 0.046 Uiso 1 1 calc R U . . .


_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
S1 O1 1.420(4) . ?
S1 O2 1.425(4) . ?
S1 N1 1.624(4) . ?
S1 C16 1.772(5) . ?
N1 C1 1.466(6) . ?
N1 C17 1.476(7) . ?
C1 C19 1.468(8) . ?
C1 C18 1.475(8) . ?
C1 C2 1.547(7) . ?
C2 C3 1.517(7) . ?
C2 C10 1.531(7) . ?
C3 C4 1.385(7) . ?
C3 C8 1.400(7) . ?
C4 C5 1.395(7) . ?
C5 C6 1.383(8) . ?
C6 C7 1.363(7) . ?
C7 C8 1.395(7) . ?
C8 C9 1.466(7) . ?
C9 C10 1.346(6) . ?
C9 C20 1.481(7) . ?
C10 C11 1.489(7) . ?
C11 C16 1.369(7) . ?
C11 C12 1.406(7) . ?
C12 C13 1.366(7) . ?
C13 C14 1.350(8) . ?
C14 C15 1.363(8) . ?
C15 C16 1.392(7) . ?
C18 C19 1.467(9) . ?
C20 C21 1.358(7) . ?
C20 C25 1.421(7) . ?
C21 C22 1.375(8) . ?
C22 C23 1.378(8) . ?
C23 C24 1.349(8) . ?
C24 C25 1.381(8) . ?

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
O1 S1 O2 119.0(2) . . ?
O1 S1 N1 106.8(2) . . ?
O2 S1 N1 108.4(2) . . ?
O1 S1 C16 107.4(2) . . ?
O2 S1 C16 107.1(2) . . ?
N1 S1 C16 107.5(2) . . ?
C1 N1 C17 115.2(4) . . ?
C1 N1 S1 120.0(3) . . ?
C17 N1 S1 116.8(3) . . ?
N1 C1 C19 113.6(4) . . ?
N1 C1 C18 115.9(4) . . ?
C19 C1 C18 59.8(4) . . ?
N1 C1 C2 114.5(4) . . ?
C19 C1 C2 122.0(4) . . ?
C18 C1 C2 120.2(4) . . ?
C3 C2 C10 101.2(4) . . ?
C3 C2 C1 112.4(4) . . ?
C10 C2 C1 110.2(4) . . ?
C4 C3 C8 121.2(5) . . ?
C4 C3 C2 129.4(5) . . ?
C8 C3 C2 109.4(4) . . ?
C3 C4 C5 117.7(5) . . ?
C6 C5 C4 121.3(5) . . ?
C7 C6 C5 120.7(5) . . ?
C6 C7 C8 119.7(5) . . ?
C7 C8 C3 119.3(5) . . ?
C7 C8 C9 132.0(5) . . ?
C3 C8 C9 108.6(4) . . ?
C10 C9 C8 109.1(4) . . ?
C10 C9 C20 126.7(4) . . ?
C8 C9 C20 124.1(4) . . ?
C9 C10 C11 124.2(4) . . ?
C9 C10 C2 111.1(4) . . ?
C11 C10 C2 124.2(4) . . ?
C16 C11 C12 116.7(5) . . ?
C16 C11 C10 125.5(4) . . ?
C12 C11 C10 117.7(4) . . ?
C13 C12 C11 121.0(5) . . ?
C14 C13 C12 121.5(6) . . ?
C13 C14 C15 119.0(5) . . ?
C14 C15 C16 120.5(5) . . ?
C11 C16 C15 121.3(5) . . ?
C11 C16 S1 119.5(4) . . ?
C15 C16 S1 118.9(4) . . ?
C19 C18 C1 59.9(4) . . ?
C18 C19 C1 60.3(4) . . ?
C21 C20 C25 118.5(5) . . ?
C21 C20 C9 123.5(4) . . ?
C25 C20 C9 118.0(5) . . ?
C20 C21 C22 122.1(5) . . ?
C21 C22 C23 119.0(5) . . ?
C24 C23 C22 120.3(6) . . ?
C23 C24 C25 121.7(6) . . ?
C24 C25 C20 118.3(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
_geom_torsion_site_symmetry_1
_geom_torsion_site_symmetry_2
_geom_torsion_site_symmetry_3
_geom_torsion_site_symmetry_4
_geom_torsion_publ_flag
O1 S1 N1 C1 167.9(4) . . . . ?
O2 S1 N1 C1 38.4(4) . . . . ?
C16 S1 N1 C1 -77.1(4) . . . . ?
O1 S1 N1 C17 -44.9(4) . . . . ?
O2 S1 N1 C17 -174.3(4) . . . . ?
C16 S1 N1 C17 70.2(4) . . . . ?
C17 N1 C1 C19 73.4(6) . . . . ?
S1 N1 C1 C19 -138.8(5) . . . . ?
C17 N1 C1 C18 140.0(5) . . . . ?
S1 N1 C1 C18 -72.3(6) . . . . ?
C17 N1 C1 C2 -73.2(6) . . . . ?
S1 N1 C1 C2 74.5(5) . . . . ?
N1 C1 C2 C3 -177.2(4) . . . . ?
C19 C1 C2 C3 39.2(7) . . . . ?
C18 C1 C2 C3 -32.0(7) . . . . ?
N1 C1 C2 C10 -65.2(5) . . . . ?
C19 C1 C2 C10 151.2(5) . . . . ?
C18 C1 C2 C10 80.0(6) . . . . ?
C10 C2 C3 C4 169.7(5) . . . . ?
C1 C2 C3 C4 -72.8(7) . . . . ?
C10 C2 C3 C8 -7.0(5) . . . . ?
C1 C2 C3 C8 110.5(5) . . . . ?
C8 C3 C4 C5 -3.4(7) . . . . ?
C2 C3 C4 C5 -179.7(5) . . . . ?
C3 C4 C5 C6 -0.3(7) . . . . ?
C4 C5 C6 C7 2.2(8) . . . . ?
C5 C6 C7 C8 -0.3(8) . . . . ?
C6 C7 C8 C3 -3.3(7) . . . . ?
C6 C7 C8 C9 174.3(5) . . . . ?
C4 C3 C8 C7 5.2(7) . . . . ?
C2 C3 C8 C7 -177.8(4) . . . . ?
C4 C3 C8 C9 -172.9(4) . . . . ?
C2 C3 C8 C9 4.1(5) . . . . ?
C7 C8 C9 C10 -176.7(5) . . . . ?
C3 C8 C9 C10 1.1(6) . . . . ?
C7 C8 C9 C20 5.1(8) . . . . ?
C3 C8 C9 C20 -177.1(4) . . . . ?
C8 C9 C10 C11 166.1(4) . . . . ?
C20 C9 C10 C11 -15.7(8) . . . . ?
C8 C9 C10 C2 -5.9(5) . . . . ?
C20 C9 C10 C2 172.3(4) . . . . ?
C3 C2 C10 C9 7.9(5) . . . . ?
C1 C2 C10 C9 -111.2(5) . . . . ?
C3 C2 C10 C11 -164.1(4) . . . . ?
C1 C2 C10 C11 76.8(5) . . . . ?
C9 C10 C11 C16 134.7(5) . . . . ?
C2 C10 C11 C16 -54.3(7) . . . . ?
C9 C10 C11 C12 -49.2(7) . . . . ?
C2 C10 C11 C12 121.8(5) . . . . ?
C16 C11 C12 C13 1.3(7) . . . . ?
C10 C11 C12 C13 -175.1(5) . . . . ?
C11 C12 C13 C14 -0.9(8) . . . . ?
C12 C13 C14 C15 -0.4(8) . . . . ?
C13 C14 C15 C16 1.2(8) . . . . ?
C12 C11 C16 C15 -0.5(7) . . . . ?
C10 C11 C16 C15 175.7(5) . . . . ?
C12 C11 C16 S1 173.4(4) . . . . ?
C10 C11 C16 S1 -10.5(7) . . . . ?
C14 C15 C16 C11 -0.8(8) . . . . ?
C14 C15 C16 S1 -174.7(4) . . . . ?
O1 S1 C16 C11 172.0(4) . . . . ?
O2 S1 C16 C11 -59.1(5) . . . . ?
N1 S1 C16 C11 57.3(4) . . . . ?
O1 S1 C16 C15 -14.1(5) . . . . ?
O2 S1 C16 C15 114.9(4) . . . . ?
N1 S1 C16 C15 -128.7(4) . . . . ?
N1 C1 C18 C19 -103.4(5) . . . . ?
C2 C1 C18 C19 111.8(5) . . . . ?
N1 C1 C19 C18 107.3(5) . . . . ?
C2 C1 C19 C18 -108.8(6) . . . . ?
C10 C9 C20 C21 132.3(5) . . . . ?
C8 C9 C20 C21 -49.7(7) . . . . ?
C10 C9 C20 C25 -46.6(7) . . . . ?
C8 C9 C20 C25 131.4(5) . . . . ?
C25 C20 C21 C22 -1.5(8) . . . . ?
C9 C20 C21 C22 179.6(5) . . . . ?
C20 C21 C22 C23 1.2(9) . . . . ?
C21 C22 C23 C24 -1.2(9) . . . . ?
C22 C23 C24 C25 1.6(9) . . . . ?
C23 C24 C25 C20 -1.8(8) . . . . ?
C21 C20 C25 C24 1.8(7) . . . . ?
C9 C20 C25 C24 -179.2(5) . . . . ?

_refine_diff_density_max         0.204
_refine_diff_density_min         -0.200
_refine_diff_density_rms         0.054



