Solvates of the antifungal drug griseofulvin: structural, thermochemical and conformational analysis.
Aitipamula, Srinivasulu; Chow, Pui Shan; Tan, Reginald B. H.; Acta crystallographica Section B, Structural science, crystal engineering and materials 70 (2014) 54–62; doi:10.1107/S2052520613026711

data_2311630
_publ_section_title
;
 Solvates of the antifungal drug griseofulvin: structural, thermochemical
 and conformational analysis.
;
_journal_issue                   'Pt 1'
_journal_name_full
'Acta crystallographica Section B, Structural science, crystal engineering and materials'
_journal_page_first              54
_journal_page_last               62
_journal_paper_doi               10.1107/S2052520613026711
_journal_volume                  70
_journal_year                    2014
_chemical_formula_sum            'C18 H20 Cl N O8'
_chemical_formula_weight         413.80
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.5456(17)
_cell_length_b                   11.740(2)
_cell_length_c                   19.269(4)
_cell_measurement_reflns_used    5198
_cell_measurement_temperature    110(2)
_cell_measurement_theta_max      31.0819
_cell_measurement_theta_min      2.0313
_cell_volume                     1933.2(6)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2007)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2007)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2007)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      110(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Rigaku Saturn 70 CCD area detector'
_diffrn_measurement_method       '\w 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  0.0256
_diffrn_reflns_av_sigmaI/netI    0.0258
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            15653
_diffrn_reflns_theta_full        28.28
_diffrn_reflns_theta_max         28.28
_diffrn_reflns_theta_min         2.03
_exptl_absorpt_coefficient_mu    0.244
_exptl_absorpt_correction_T_max  0.9484
_exptl_absorpt_correction_T_min  0.9004
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'R. H. Blessing, Acta Cryst. 1995 A51, 33-38'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.422
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             864
_exptl_crystal_size_max          0.44
_exptl_crystal_size_mid          0.33
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.279
_refine_diff_density_min         -0.330
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.02(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.142
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     258
_refine_ls_number_reflns         4791
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.142
_refine_ls_R_factor_all          0.0410
_refine_ls_R_factor_gt           0.0401
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0605P)^2^+0.3891P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1090
_refine_ls_wR_factor_ref         0.1099
_reflns_number_gt                4703
_reflns_number_total             4791
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            zb5031sup1.cif
_cod_data_source_block           GF-NM
_cod_original_sg_symbol_H-M      'P21 21 21'
_cod_database_code               2311630