Tautomerisation and polymorphism in molecular complexes of piroxicam with mono-substituted benzoic acids
Wales, Craig; Thomas, Lynne H.; Wilson, Chick C.; CrystEngComm 14 (2012) 7264–; doi:10.1039/c2ce26069g

data_7214859
_publ_section_title
;
 Tautomerisation and polymorphism in molecular complexes of piroxicam with
 mono-substituted benzoic acids
;
_journal_issue                   21
_journal_name_full               CrystEngComm
_journal_page_first              7264
_journal_paper_doi               10.1039/c2ce26069g
_journal_volume                  14
_journal_year                    2012
_chemical_formula_moiety         'C15 H13 N3 O4 S, C7 H5 Cl O2'
_chemical_formula_sum            'C22 H18 Cl N3 O6 S'
_chemical_formula_weight         487.92
_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   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 100.693(12)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   19.768(17)
_cell_length_b                   6.917(6)
_cell_length_c                   31.56(3)
_cell_measurement_reflns_used    7257
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.7
_cell_measurement_theta_min      1.8
_cell_volume                     4240(7)
_computing_cell_refinement       'CrystalClear-SM Expert 2.0 r5 (Rigaku, 2010)'
_computing_data_collection       'CrystalClear-SM Expert 2.0 r5 (Rigaku, 2010)'
_computing_data_reduction        'CrystalClear-SM Expert 2.0 r5 (Rigaku, 2010'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-86(Sheldrick, 1997)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'Rigaku Saturn CCD'
_diffrn_measurement_method       'profile data from \w-scans'
_diffrn_radiation_monochromator  'silicon 111'
_diffrn_radiation_source         synchrotron
_diffrn_radiation_type           synchrotron
_diffrn_radiation_wavelength     0.68890
_diffrn_reflns_av_R_equivalents  0.1402
_diffrn_reflns_av_sigmaI/netI    0.1574
_diffrn_reflns_limit_h_max       25
_diffrn_reflns_limit_h_min       -25
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       39
_diffrn_reflns_limit_l_min       -41
_diffrn_reflns_number            36761
_diffrn_reflns_theta_full        26.68
_diffrn_reflns_theta_max         26.68
_diffrn_reflns_theta_min         1.77
_exptl_absorpt_coefficient_mu    0.251
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.6121
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'ABSCOR, Rigaku 1995'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.529
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             2016
_refine_diff_density_max         0.758
_refine_diff_density_min         -0.688
_refine_diff_density_rms         0.099
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.094
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     613
_refine_ls_number_reflns         9709
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.094
_refine_ls_R_factor_all          0.1874
_refine_ls_R_factor_gt           0.1103
_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^)+(0.0989P)^2^+4.6477P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2314
_refine_ls_wR_factor_ref         0.2803
_reflns_number_gt                5087
_reflns_number_total             9709
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2ce26069g.txt
_cod_data_source_block           shelxl_PXZ_2CLBA
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/automatic-downloads/retrospective/RSC/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               7214859