Phenazopyridine Cocrystal and Salts That Exhibit Enhanced Solubility and Stability
Tao, Qian; Chen, Jia-Mei; Ma, Lei; Lu, Tong-Bu; Crystal Growth & Design 12 (2012) 3144–; doi:10.1021/cg300327x

data_4506237
_publ_section_title
;
 Phenazopyridine Cocrystal and Salts That Exhibit Enhanced Solubility and
 Stability
;
_journal_issue                   6
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              3144
_journal_paper_doi               10.1021/cg300327x
_journal_volume                  12
_journal_year                    2012
_chemical_formula_moiety         'C11 H12 N5, C7 H4 N O3 S'
_chemical_formula_sum            'C18 H18 N6 O3 S'
_chemical_formula_weight         398.45
_chemical_melting_point          482.2
_chemical_name_common            'Phenazopyridine Saccharate'
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                84.729(5)
_cell_angle_beta                 85.353(5)
_cell_angle_gamma                63.728(7)
_cell_formula_units_Z            2
_cell_length_a                   7.4108(5)
_cell_length_b                   7.8292(5)
_cell_length_c                   17.7574(9)
_cell_measurement_reflns_used    3453
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      71.0287
_cell_measurement_theta_min      2.4993
_cell_volume                     919.02(11)
_computing_cell_refinement
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.11 (release 16-05-2011 CrysAlis171 .NET)
(compiled May 16 2011,17:55:39)
;
_computing_data_collection
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.11 (release 16-05-2011 CrysAlis171 .NET)
(compiled May 16 2011,17:55:39)
;
_computing_data_reduction
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.11 (release 16-05-2011 CrysAlis171 .NET)
(compiled May 16 2011,17:55:39)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_detector_area_resol_mean 8.2417
_diffrn_measured_fraction_theta_full 0.940
_diffrn_measured_fraction_theta_max 0.940
_diffrn_measurement_device_type  'Xcalibur, Onyx, Nova'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0311
_diffrn_reflns_av_sigmaI/netI    0.0338
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            6166
_diffrn_reflns_theta_full        71.16
_diffrn_reflns_theta_max         71.16
_diffrn_reflns_theta_min         2.50
_exptl_absorpt_coefficient_mu    1.861
_exptl_absorpt_correction_T_max  0.8358
_exptl_absorpt_correction_T_min  0.6052
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.11 (release 16-05-2011 CrysAlis171 .NET)
(compiled May 16 2011,17:55:39)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.440
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             416
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.175
_refine_diff_density_min         -0.320
_refine_diff_density_rms         0.042
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.052
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     303
_refine_ls_number_reflns         3344
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.052
_refine_ls_R_factor_all          0.0590
_refine_ls_R_factor_gt           0.0486
_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^)+(0.0637P)^2^+0.3590P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1320
_refine_ls_wR_factor_ref         0.1402
_reflns_number_gt                2716
_reflns_number_total             3344
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg300327x_si_005.cif
_cod_data_source_block           tq_tj_110618
_cod_original_cell_volume        919.02(10)
_cod_database_code               4506237