Temozolomide Cocrystals with Carboxamide Coformers
Sanphui, Palash; Babu, N. Jagadeesh; Nangia, Ashwini; Crystal Growth & Design 13 (2013) 2208–; doi:10.1021/cg400322t

data_4507753
_publ_section_title
;
 Temozolomide Cocrystals with Carboxamide Coformers
;
_journal_issue                   5
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              2208
_journal_paper_doi               10.1021/cg400322t
_journal_volume                  13
_journal_year                    2013
_chemical_formula_moiety         '2(C6 H6 N6 O2), C6 H6 N2 O'
_chemical_formula_sum            'C18 H18 N14 O5'
_chemical_formula_weight         510.46
_chemical_melting_point          448.5(15)
_chemical_name_systematic
; 
 2:1 cocrystal of Temozolomide and NIcotinamide  
;
_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                 92.910(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.4071(11)
_cell_length_b                   6.6310(6)
_cell_length_c                   26.504(2)
_cell_measurement_reflns_used    3518
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      24.29
_cell_measurement_theta_min      2.31
_cell_volume                     2177.7(3)
_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      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0530
_diffrn_reflns_av_sigmaI/netI    0.0612
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            15373
_diffrn_reflns_theta_full        26.03
_diffrn_reflns_theta_max         26.03
_diffrn_reflns_theta_min         1.54
_exptl_absorpt_coefficient_mu    0.120
_exptl_absorpt_correction_T_max  0.9904
_exptl_absorpt_correction_T_min  0.9346
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker AXS SADABS program'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.557
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1056
_exptl_crystal_size_max          0.57
_exptl_crystal_size_mid          0.19
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.327
_refine_diff_density_min         -0.292
_refine_diff_density_rms         0.050
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.032
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     360
_refine_ls_number_reflns         4298
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.046
_refine_ls_R_factor_all          0.0929
_refine_ls_R_factor_gt           0.0527
_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^)+(0.0687P)^2^+0.0871P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1246
_refine_ls_wR_factor_ref         0.1442
_reflns_number_gt                2689
_reflns_number_total             4298
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg400322t_si_003.cif
_cod_data_source_block           TMZ-NCT
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '447-450' was changed to '448.5(15)'
- the average value was taken and precision was
estimated.

'_symmetry_cell_setting' value 'Monoclinic' changed to
'monoclinic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               4507753