Soluble Cocrystals of the Xanthine Oxidase Inhibitor Febuxostat
Maddileti, D.; Jayabun, S. K.; Nangia, Ashwini; Crystal Growth & Design 13 (2013) 3188–; doi:10.1021/cg400583z

data_4510758
_publ_section_title
;
 Soluble Cocrystals of the Xanthine Oxidase Inhibitor Febuxostat
;
_journal_issue                   7
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              3188
_journal_paper_doi               10.1021/cg400583z
_journal_volume                  13
_journal_year                    2013
_chemical_formula_moiety         'C16 H16 N2 O3 S, C2 H5 N O'
_chemical_formula_sum            'C18 H21 N3 O4 S'
_chemical_formula_weight         375.44
_chemical_melting_point          428
_chemical_name_common            Febuxostat-Acetamide
_chemical_name_systematic
'2-(3-cyano-4-isobutyloxy)-phenyl-4-methyl-5-thiazolecarboxylic acid : acetaamide (1:1)'
_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                 95.290(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.8516(4)
_cell_length_b                   23.6670(9)
_cell_length_c                   7.4362(4)
_cell_measurement_reflns_used    4957
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      26.3083
_cell_measurement_theta_min      2.8727
_cell_volume                     1901.67(14)
_computing_molecular_graphics
;
 OLEX2: a complete structure solution, refinement and analysis program.
 Dolomanov et al., J. Appl. Cryst. (2009). 42, 339-341
;
_computing_publication_material
;
 OLEX2: a complete structure solution, refinement and analysis program.
 Dolomanov et al., J. Appl. Cryst. (2009). 42, 339-341
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Xcalibur, Eos, Gemini'
_diffrn_measurement_method       '\w scans'
_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  0.0229
_diffrn_reflns_av_sigmaI/netI    0.0318
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       28
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            6961
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.88
_exptl_absorpt_coefficient_mu    0.198
_exptl_absorpt_correction_T_max  26.3083
_exptl_absorpt_correction_T_min  2.8727
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.34.40 (release 27-08-2010 CrysAlis171 .NET)
(compiled Aug 27 2010,11:50:40)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.311
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             792
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.243
_refine_diff_density_min         -0.173
_refine_diff_density_rms         0.038
_refine_ls_extinction_coef       0.0139(12)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.046
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     252
_refine_ls_number_reflns         3339
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.046
_refine_ls_R_factor_all          0.0488
_refine_ls_R_factor_gt           0.0400
_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^)+(0.0462P)^2^+0.5269P] where P=(Fo^2^+2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0974
_refine_ls_wR_factor_ref         0.1025
_reflns_number_gt                2839
_reflns_number_total             3339
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg400583z_si_002.cif
_cod_data_source_block           FEB-ACT
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '428 K' was changed to '428' - the
value should be numeric and without a unit
designator.

'_symmetry_cell_setting' value 'Monoclinic' changed to
'monoclinic' according to
/usr/data/users/saulius/automatic-downloads/retrospective/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               4510758