Co-crystals of the antiretroviral nevirapine: crystal structures, thermal analysis and dissolution behaviour
Caira, Mino R.; Bourne, Susan A.; Samsodien, Halima; Engel, Emile; Liebenberg, Wilna; Stieger, Nicole; Aucamp, Marique; CrystEngComm 14 (2012) 2541–; doi:10.1039/c2ce06507j

data_7207608
_publ_section_title
;
 Co-crystals of the antiretroviral nevirapine: crystal structures, thermal
 analysis and dissolution behaviour
;
_journal_issue                   7
_journal_name_full               CrystEngComm
_journal_page_first              2541
_journal_paper_doi               10.1039/c2ce06507j
_journal_volume                  14
_journal_year                    2012
_chemical_formula_moiety         '2(C15 H14 N4 O), C7 H5 N O3 S'
_chemical_formula_sum            'C37 H33 N9 O5 S'
_chemical_formula_weight         715.78
_chemical_melting_point          496.15
_chemical_name_common            'nevirapine-saccharin 2:1 cocrystal'
_chemical_name_systematic
;
11-cyclopropyl-5,11-dihydro-4-methyl-6H-dipyrido[3,2-b:2',3'-e]diazepin-6-one
1,2-benzoisothiazol-3(2H)-one 1,1-dioxide 1:1 co-crystal
;
_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                64.090(3)
_cell_angle_beta                 79.292(2)
_cell_angle_gamma                82.686(2)
_cell_formula_units_Z            2
_cell_length_a                   9.5649(5)
_cell_length_b                   13.8069(7)
_cell_length_c                   13.8726(7)
_cell_measurement_reflns_used    6584
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      26.36
_cell_measurement_theta_min      2.99
_cell_volume                     1616.98(15)
_computing_cell_refinement       'DENZO-SMN (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT 2000'
_computing_data_reduction        'DENZO-SMN (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 1997)'
_computing_publication_material  'PLATON (Spek, 1990)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean n/a
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Nonius Kappa CCD diffractometer'
_diffrn_measurement_method       'phi- and omega-scans of 1.00 deg.'
_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  0.0325
_diffrn_reflns_av_sigmaI/netI    0.0480
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            12967
_diffrn_reflns_theta_full        26.36
_diffrn_reflns_theta_max         26.36
_diffrn_reflns_theta_min         2.99
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count n/a
_diffrn_standards_interval_time  n/a
_diffrn_standards_number         n/a
_exptl_absorpt_coefficient_mu    0.163
_exptl_absorpt_correction_T_max  0.9871
_exptl_absorpt_correction_T_min  0.9776
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.470
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             748
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.235
_refine_diff_density_min         -0.389
_refine_diff_density_rms         0.051
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.039
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     471
_refine_ls_number_reflns         6584
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.039
_refine_ls_R_factor_all          0.0855
_refine_ls_R_factor_gt           0.0459
_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^)+(0.0586P)^2^+0.4061P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1035
_refine_ls_wR_factor_ref         0.1206
_reflns_number_gt                4445
_reflns_number_total             6584
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2ce06507j.txt
_cod_data_source_block           c:\blurby
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '223 C' was changed to '496.15' - it
was converted from degrees Celsius(C) to Kelvins(K).

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        1616.98(14)
_cod_database_code               7207608