Pharmaceutical Co-Crystals of Pyrazinecarboxamide (PZA) with Various Carboxylic Acids: Crystallography, Hirshfeld Surfaces, and Dissolution Study
Luo, Yang-Hui; Sun, Bai-Wang; Crystal Growth & Design 13 (2013) 2098–; doi:10.1021/cg400167w

data_4507722
_publ_section_title
;
 Pharmaceutical Co-Crystals of Pyrazinecarboxamide (PZA) with Various
 Carboxylic Acids: Crystallography, Hirshfeld Surfaces, and Dissolution
 Study
;
_journal_issue                   5
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              2098
_journal_paper_doi               10.1021/cg400167w
_journal_volume                  13
_journal_year                    2013
_chemical_formula_moiety         'C5 H5 N3 O, 0.5(C4 H6 O4)'
_chemical_formula_sum            'C7 H8 N3 O3'
_chemical_formula_weight         182.16
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 101.54(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   3.8840(8)
_cell_length_b                   17.364(3)
_cell_length_c                   12.699(3)
_cell_measurement_reflns_used    1540
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.39
_cell_measurement_theta_min      2.01
_cell_volume                     839.1(3)
_computing_cell_refinement       'CrystalClear (Rigaku, 2005)'
_computing_data_collection       'CrystalClear (Rigaku, 2005)'
_computing_data_reduction        'CrystalClear (Rigaku, 2005)'
_computing_molecular_graphics    'DIAMOND (Brandenburg & Putz, 2005)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 13.6612
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Rigaku SCXmini diffractometer'
_diffrn_measurement_method       CCD_Profile_fitting
_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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0420
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -4
_diffrn_reflns_limit_k_max       0
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -3
_diffrn_reflns_number            1540
_diffrn_reflns_theta_full        25.39
_diffrn_reflns_theta_max         25.39
_diffrn_reflns_theta_min         2.01
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 2
_diffrn_standards_interval_time  150
_exptl_absorpt_coefficient_mu    0.115
_exptl_absorpt_correction_T_max  0.988
_exptl_absorpt_correction_T_min  0.970
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'CrystalClear (Rigaku, 2005)'
_exptl_crystal_density_diffrn    1.442
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             380
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.168
_refine_diff_density_min         -0.181
_refine_diff_density_rms         0.040
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.047
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     118
_refine_ls_number_reflns         1540
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.047
_refine_ls_R_factor_all          0.0561
_refine_ls_R_factor_gt           0.0413
_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^)+(0.0527P)^2^+0.1557P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1078
_refine_ls_wR_factor_ref         0.1147
_reflns_number_gt                1186
_reflns_number_total             1540
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg400167w_si_003.cif
_cod_data_source_block           x
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               4507722