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_4500815
_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 O3'
_chemical_formula_sum            'C19 H20 N4 O5 S'
_chemical_formula_weight         416.45
_chemical_melting_point          493.67
_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                74.611(3)
_cell_angle_beta                 75.053(3)
_cell_angle_gamma                86.102(3)
_cell_formula_units_Z            2
_cell_length_a                   8.0060(5)
_cell_length_b                   9.3913(5)
_cell_length_c                   13.4786(8)
_cell_measurement_reflns_used    7087
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      37.34
_cell_measurement_theta_min      2.41
_cell_volume                     944.02(10)
_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 0.993
_diffrn_measured_fraction_theta_max 0.993
_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  0.0444
_diffrn_reflns_av_sigmaI/netI    0.0564
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            11913
_diffrn_reflns_theta_full        26.99
_diffrn_reflns_theta_max         26.99
_diffrn_reflns_theta_min         1.62
_exptl_absorpt_coefficient_mu    0.213
_exptl_absorpt_correction_T_max  0.966
_exptl_absorpt_correction_T_min  0.917
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'multi-scan absorption correction'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.465
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Needle
_exptl_crystal_F_000             436
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.34
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.333
_refine_diff_density_min         -0.557
_refine_diff_density_rms         0.090
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.044
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     284
_refine_ls_number_reflns         4094
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.044
_refine_ls_R_factor_all          0.0527
_refine_ls_R_factor_gt           0.0458
_refine_ls_shift/su_max          0.012
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0667P)^2^+0.4130P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1180
_refine_ls_wR_factor_ref         0.1288
_reflns_number_gt                3555
_reflns_number_total             4094
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg200334m_si_002.cif
_cod_data_source_block           cmr_025_sg_1
_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_sg_symbol_H-M      'P-1   '
_cod_database_code               4500815