Strategic synthon approach in obtaining cocrystals and cocrystal polymorphs of a high-Z′ system deferiprone – an anti-thalassemia drug
Rajendrakumar, Satyasree; Surampudi Venkata Sai Durga, Anuja; Balasubramanian, Sridhar; Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials 77 (2021) 946–964; doi:10.1107/S205252062100980X

data_2022892
_publ_section_title
;
 Strategic synthon approach in obtaining cocrystals and cocrystal
 polymorphs of a high-Z&#x2032; system deferiprone -- an anti-thalassemia
 drug
;
_journal_coeditor_code           LO5093
_journal_issue                   6
_journal_name_full
'Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials'
_journal_page_first              946
_journal_page_last               964
_journal_paper_doi               10.1107/S205252062100980X
_journal_volume                  77
_journal_year                    2021
_chemical_formula_moiety         'C7 H9 N O2, C6 H6 O2'
_chemical_formula_sum            'C13 H15 N O4'
_chemical_formula_weight         249.26
_chemical_name_common            'Deferiprone-Catechol (1:1) cocrystal'
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   mixed
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_cell_angle_alpha                90
_cell_angle_beta                 110.761(7)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.867(3)
_cell_length_b                   9.550(2)
_cell_length_c                   10.487(2)
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_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.69
_cell_measurement_theta_min      2.71
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_computing_cell_refinement       '<i>SAINT</i> (Bruker, 2016)'
_computing_data_collection       '<i>APEX3</i> (Bruker, 2016)'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'DIAMOND (Brandenburg & Putz, 2005)'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    '<i>SHELXT</i> (Sheldrick, 2015)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker D8 QUEST PHOTON-100'
_diffrn_measurement_method       '\w and \f'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0712
_diffrn_reflns_av_unetI/netI     0.0475
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_number            2125
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        24.986
_diffrn_reflns_theta_max         24.986
_diffrn_reflns_theta_min         2.723
_diffrn_source                   microfocus
_exptl_absorpt_coefficient_mu    0.102
_exptl_absorpt_correction_T_max  0.7461
_exptl_absorpt_correction_T_min  0.6862
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, Bruker, 2016'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.374
_exptl_crystal_description       block
_exptl_crystal_F_000             528
_exptl_crystal_size_max          0.260
_exptl_crystal_size_mid          0.240
_exptl_crystal_size_min          0.180
_refine_diff_density_max         0.376
_refine_diff_density_min         -0.379
_refine_diff_density_rms         0.094
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     177
_refine_ls_number_reflns         2125
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.250
_refine_ls_R_factor_all          0.1106
_refine_ls_R_factor_gt           0.0863
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0410P)^2^+5.1435P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1940
_refine_ls_wR_factor_ref         0.2032
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1755
_reflns_number_total             2125
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            lo5093sup1.cif
_cod_data_source_block           KA1027_0m_4def-cat_1_1_form2
_cod_original_cell_volume        1205.1(5)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2022892
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.974
_shelx_estimated_absorpt_t_max   0.982
_shelx_res_checksum              78728
_shelx_hkl_checksum              85410
_cod_database_fobs_code 2022892