Cholesterol-based photo-switchable mesogenic dimers. Strongly bent molecules versus an intercalated structure
Zep, Anna; Pruszkowska, Kamila; Dobrzycki, Łukasz; Sektas, Katarzyna; Szałański, Piotr; Marek, Paulina H.; Cyrański, Michał K.; Sicinski, Rafal R.; CrystEngComm 21 (2019) 2779–; doi:10.1039/C9CE00013E

data_7232509
_publ_section_title
;
 Cholesterol-based photo-switchable mesogenic dimers. Strongly bent
 molecules versus an intercalated structure
;
_journal_issue                   17
_journal_name_full               CrystEngComm
_journal_page_first              2779
_journal_paper_doi               10.1039/C9CE00013E
_journal_volume                  21
_journal_year                    2019
_chemical_absolute_configuration rmad
_chemical_formula_sum            'C50 H72 N2 O5'
_chemical_formula_weight         781.09
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_audit_update_record
;
2018-10-04 deposited with the CCDC.    2019-03-15 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 109.6287(14)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   18.4512(5)
_cell_length_b                   10.2622(3)
_cell_length_c                   25.1817(7)
_cell_measurement_reflns_used    9810
_cell_measurement_temperature    100.(2)
_cell_measurement_theta_max      76.334
_cell_measurement_theta_min      3.623
_cell_volume                     4491.1(2)
_computing_cell_refinement       'SAINT V8.34A (Bruker AXS Inc., 2013)'
_computing_data_collection       'APEX2 V2013 (Bruker AXS Inc., 2013)'
_computing_data_reduction        'SAINT V8.34A (Bruker AXS Inc., 2013)'
_computing_publication_material  'APEX2 V2013 (Bruker AXS Inc., 2013)'
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100.(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker D8 VENTURE PHOTON 100 CMOS'
_diffrn_measurement_method       'omega and phi scans'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0674
_diffrn_reflns_av_unetI/netI     0.0443
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            79425
_diffrn_reflns_theta_full        67.99
_diffrn_reflns_theta_max         67.99
_diffrn_reflns_theta_min         1.86
_diffrn_source                   'INCOATEC I\mS micro--focus source'
_exptl_absorpt_coefficient_mu    0.571
_exptl_absorpt_correction_T_max  0.99
_exptl_absorpt_correction_T_min  0.83
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2014/2 (Bruker AXS Inc.)'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.155
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       planar
_exptl_crystal_F_000             1704
_exptl_crystal_size_max          0.328
_exptl_crystal_size_mid          0.118
_exptl_crystal_size_min          0.016
_refine_diff_density_max         0.398
_refine_diff_density_min         -0.248
_refine_ls_abs_structure_details
;
Flack x determined using 5303 quotients [(I+)-(I-)]/[(I+)+(I-)]
(Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.02(7)
_refine_ls_extinction_coef       0.00028(7)
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1129
_refine_ls_number_reflns         16286
_refine_ls_number_restraints     76
_refine_ls_restrained_S_all      1.041
_refine_ls_R_factor_all          0.0663
_refine_ls_R_factor_gt           0.0506
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0620P)^2^+1.3586P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1208
_refine_ls_wR_factor_ref         0.1291
_reflns_number_gt                13489
_reflns_number_total             16286
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9ce00013e2.cif
_cod_data_source_block           C4
_cod_depositor_comments
'Adding full bibliography for 7232506--7232511.cif.'
_cod_database_code               7232509