Stabilizing vitamin D3 by conformationally selective co-crystallization
Jian-Rong Wang; Chun Zhou; Xueping Yu; Xuefeng Mei; Chem.Commun. 50 (2014) 855–; doi:10.1039/c3cc47747a

data_7110258
_publ_section_title
;
 Stabilizing vitamin D3 by conformationally selective co-crystallization
;
_journal_name_full               Chem.Commun.
_journal_page_first              855
_journal_paper_doi               10.1039/c3cc47747a
_journal_volume                  50
_journal_year                    2014
_chemical_absolute_configuration rm
_chemical_formula_sum            'C54 H92 O2'
_chemical_formula_weight         773.28
_chemical_name_common            1b
_space_group_IT_number           5
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C 2y'
_symmetry_space_group_name_H-M   'C 1 2 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 98.464(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   33.2196(10)
_cell_length_b                   6.8885(3)
_cell_length_c                   21.6120(7)
_cell_measurement_reflns_used    6169
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      54.87
_cell_measurement_theta_min      4.50
_cell_volume                     4891.7(3)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0479
_diffrn_reflns_av_sigmaI/netI    0.1206
_diffrn_reflns_limit_h_max       42
_diffrn_reflns_limit_h_min       -42
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            21749
_diffrn_reflns_theta_full        27.47
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         1.45
_exptl_absorpt_coefficient_mu    0.061
_exptl_absorpt_correction_T_max  0.9976
_exptl_absorpt_correction_T_min  0.9880
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.049
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1724
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.332
_refine_diff_density_min         -0.205
_refine_diff_density_rms         0.047
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.1(15)
_refine_ls_extinction_coef       0.00136(17)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.987
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     522
_refine_ls_number_reflns         10459
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      0.988
_refine_ls_R_factor_all          0.1272
_refine_ls_R_factor_gt           0.0642
_refine_ls_shift/su_max          0.064
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0498P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1018
_refine_ls_wR_factor_ref         0.1186
_reflns_number_gt                6455
_reflns_number_total             10459
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3cc47747a.txt
_cod_data_source_block           C:\Users\JRWang\Desktop\VD3-CAL\1b.CIF
_cod_original_sg_symbol_H-M      C2
_cod_database_code               7110258