Co-Crystals of Sulfamethazine with Some Carboxylic Acids and Amides: Co-Former Assisted Tautomerism in an Active Pharmaceutical Ingredient and Hydrogen Bond Competition Study
Ghosh, Soumyajit; Bag, Partha Pratim; Reddy, C. Malla; Crystal Growth & Design 11 (2011) 3489–; doi:10.1021/cg200334m

data_4500823
_publ_section_title
;
 Co-Crystals of Sulfamethazine with Some Carboxylic Acids and Amides:
 Co-Former Assisted Tautomerism in an Active Pharmaceutical Ingredient and
 Hydrogen Bond Competition Study
;
_journal_issue                   8
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              3489
_journal_paper_doi               10.1021/cg200334m
_journal_volume                  11
_journal_year                    2011
_chemical_formula_moiety         'C12 H14 N4 O2 S, C7 H6 N O2'
_chemical_formula_sum            'C19 H20 N5 O4 S'
_chemical_formula_weight         414.46
_chemical_melting_point          453.036
_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                109.249(2)
_cell_angle_beta                 95.432(2)
_cell_angle_gamma                106.165(2)
_cell_formula_units_Z            2
_cell_length_a                   8.3238(6)
_cell_length_b                   9.5864(8)
_cell_length_c                   14.0808(11)
_cell_measurement_reflns_used    8184
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      31.08
_cell_measurement_theta_min      2.31
_cell_volume                     997.06(14)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_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  0.0293
_diffrn_reflns_av_sigmaI/netI    0.0255
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            15350
_diffrn_reflns_theta_full        27.00
_diffrn_reflns_theta_max         27.00
_diffrn_reflns_theta_min         1.57
_exptl_absorpt_coefficient_mu    0.199
_exptl_absorpt_correction_T_max  0.963
_exptl_absorpt_correction_T_min  0.944
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'multi-scan absorption correction'
_exptl_crystal_colour            'pale yellow'
_exptl_crystal_density_diffrn    1.381
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             434
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.19
_refine_diff_density_max         0.330
_refine_diff_density_min         -0.403
_refine_diff_density_rms         0.051
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.783
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     284
_refine_ls_number_reflns         4309
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.783
_refine_ls_R_factor_all          0.0614
_refine_ls_R_factor_gt           0.0472
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1598P)^2^+0.8235P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1551
_refine_ls_wR_factor_ref         0.1865
_reflns_number_gt                3425
_reflns_number_total             4309
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg200334m_si_002.cif
_cod_data_source_block           mo_cmr_sg_49_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        997.06(13)
_cod_original_sg_symbol_H-M      'P-1   '
_cod_database_code               4500823