Cocrystals of Piroxicam with Carboxylic Acids
Childs, Scott L.; Hardcastle, Kenneth I.; Crystal Growth & Design 7 (2007) 1291–; doi:10.1021/cg060742p

data_4504059
_publ_section_title
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 Cocrystals of Piroxicam with Carboxylic Acids
;
_journal_issue                   7
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              1291
_journal_paper_doi               10.1021/cg060742p
_journal_volume                  7
_journal_year                    2007
_chemical_formula_moiety         'C15 H13 N3 O4 S, C7 H6 O3'
_chemical_formula_sum            'C22 H19 N3 O7 S'
_chemical_formula_weight         469.46
_chemical_name_common
'piroxicam:4-hydroxybenzoic acid cocrystal, Form 2 (1:1)'
_chemical_name_systematic
;

 4-Hydroxy-2-methyl-N-(2-pyridyl)-2H-1,2-benzothiazine
 -3-carboxamide-1,1-dioxide 4-hydroxybenzoic acid

;
_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                95.965(3)
_cell_angle_beta                 100.576(3)
_cell_angle_gamma                96.858(2)
_cell_formula_units_Z            2
_cell_length_a                   7.4086(10)
_cell_length_b                   10.9004(15)
_cell_length_c                   12.9268(17)
_cell_measurement_reflns_used    5859
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      29.84
_cell_measurement_theta_min      2.33
_cell_volume                     1010.3(2)
_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      173(2)
_diffrn_measured_fraction_theta_full 0.896
_diffrn_measured_fraction_theta_max 0.896
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0403
_diffrn_reflns_av_sigmaI/netI    0.0510
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            14367
_diffrn_reflns_theta_full        29.91
_diffrn_reflns_theta_max         29.91
_diffrn_reflns_theta_min         1.62
_exptl_absorpt_coefficient_mu    0.214
_exptl_absorpt_correction_T_max  0.9812
_exptl_absorpt_correction_T_min  0.9191
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2.10, Sheldrick 2003'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.543
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       irreg
_exptl_crystal_F_000             488
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.19
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.584
_refine_diff_density_min         -0.468
_refine_diff_density_rms         0.090
_refine_ls_extinction_coef       0.0048(19)
_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   1.132
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     302
_refine_ls_number_reflns         5252
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.132
_refine_ls_R_factor_all          0.0669
_refine_ls_R_factor_gt           0.0532
_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^)+(0.0570P)^2^+0.7000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1388
_refine_ls_wR_factor_ref         0.1468
_reflns_number_gt                4220
_reflns_number_total             5252
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg060742psi20061021_092419.cif
_cod_data_source_block           6
_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 
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_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4504059