Discovery of new polymorphs of the tuberculosis drug isoniazid
Zhang, Keke; Fellah, Noalle; Shtukenberg, Alexander G.; Fu, Xiaoyan; Hu, Chunhua; Ward, Michael D.; CrystEngComm  (2020) –; doi:10.1039/D0CE00440E

data_7240290
_publ_section_title
;
 Discovery of new polymorphs of the tuberculosis drug isoniazid
;
_journal_name_full               CrystEngComm
_journal_paper_doi               10.1039/D0CE00440E
_journal_year                    2020
_chemical_formula_sum            'C6 H7 N3 O'
_chemical_formula_weight         137.15
_space_group_crystal_system      orthorhombic
_space_group_IT_number           29
_space_group_name_Hall           'P 2c -2ac'
_space_group_name_H-M_alt        'P c a 21'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2020-02-14 deposited with the CCDC.	2020-03-27 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            16
_cell_length_a                   34.428(5)
_cell_length_b                   3.8120(6)
_cell_length_c                   19.787(3)
_cell_measurement_reflns_used    1162
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      18.86
_cell_measurement_theta_min      2.37
_cell_volume                     2596.8(7)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT (Sheldrick 2015)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1332
_diffrn_reflns_av_unetI/netI     0.0927
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       34
_diffrn_reflns_limit_h_min       -34
_diffrn_reflns_limit_k_max       3
_diffrn_reflns_limit_k_min       -3
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            18380
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        20.834
_diffrn_reflns_theta_max         20.834
_diffrn_reflns_theta_min         1.568
_exptl_absorpt_coefficient_mu    0.101
_exptl_absorpt_correction_T_max  0.7446
_exptl_absorpt_correction_T_min  0.6623
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.403
_exptl_crystal_description       needle
_exptl_crystal_F_000             1152
_exptl_crystal_size_max          0.540
_exptl_crystal_size_mid          0.030
_exptl_crystal_size_min          0.020
_refine_diff_density_max         0.199
_refine_diff_density_min         -0.191
_refine_diff_density_rms         0.045
_refine_ls_abs_structure_details
;
 Flack x determined using 763 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   3.0(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.027
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     397
_refine_ls_number_reflns         2728
_refine_ls_number_restraints     14
_refine_ls_restrained_S_all      1.025
_refine_ls_R_factor_all          0.0850
_refine_ls_R_factor_gt           0.0515
_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^)+(0.0460P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1050
_refine_ls_wR_factor_ref         0.1202
_reflns_Friedel_coverage         0.928
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     1.000
_reflns_number_gt                1998
_reflns_number_total             2728
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0ce00440e2.cif
_cod_data_source_block           19mdw2h
_cod_database_code               7240290
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.947
_shelx_estimated_absorpt_t_max   0.998
_shelx_res_checksum              12399