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_2022888
_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'
_chemical_formula_sum            'C7 H9 N O2'
_chemical_formula_weight         139.15
_chemical_name_common            'Deferiprone form IV'
_space_group_crystal_system      orthorhombic
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_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_atom_sites_solution_hydrogens   mixed
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_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            16
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_cell_length_b                   7.16238(10)
_cell_length_c                   25.8688(4)
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_cell_measurement_temperature    100(2)
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_cell_measurement_theta_min      2.15
_cell_volume                     2538.51(6)
_computing_cell_refinement       '<i>SAINT</i> (Bruker, 2016)'
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_computing_structure_solution    '<i>SHELXT</i> (Sheldrick, 2015)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker D8 QUEST PHOTON-100'
_diffrn_measurement_method       '\w and \f'
_diffrn_radiation_type           MoK\a
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_diffrn_reflns_Laue_measured_fraction_full 0.998
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_diffrn_reflns_limit_l_min       -36
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_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         30.568
_diffrn_reflns_theta_min         2.165
_diffrn_source                   microfocus
_exptl_absorpt_coefficient_mu    0.108
_exptl_absorpt_correction_T_max  0.7461
_exptl_absorpt_correction_T_min  0.6863
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, Bruker, 2016'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.456
_exptl_crystal_description       block
_exptl_crystal_F_000             1184
_exptl_crystal_size_max          0.320
_exptl_crystal_size_mid          0.280
_exptl_crystal_size_min          0.160
_refine_diff_density_max         0.467
_refine_diff_density_min         -0.292
_refine_diff_density_rms         0.067
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     193
_refine_ls_number_reflns         3892
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0519
_refine_ls_R_factor_gt           0.0415
_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^)+(0.0572P)^2^+1.1028P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1098
_refine_ls_wR_factor_ref         0.1167
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3243
_reflns_number_total             3892
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            lo5093sup1.cif
_cod_data_source_block           Id
_cod_database_code               2022888
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.966
_shelx_estimated_absorpt_t_max   0.983
_shelx_res_checksum              2812
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_cod_database_fobs_code 2022888