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

data_4507752
_publ_section_title
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 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          460.5(15)
_chemical_name_systematic
; 
 2:1 cocrystal of Temozolomide and Isonicotinamide  
;
_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                87.125(5)
_cell_angle_beta                 75.546(4)
_cell_angle_gamma                87.003(4)
_cell_formula_units_Z            2
_cell_length_a                   9.645(3)
_cell_length_b                   10.609(3)
_cell_length_c                   10.925(3)
_cell_measurement_reflns_used    4888
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      26.01
_cell_measurement_theta_min      2.18
_cell_volume                     1080.2(5)
_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      298(2)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_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  0.0296
_diffrn_reflns_av_sigmaI/netI    0.0336
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            10890
_diffrn_reflns_theta_full        26.01
_diffrn_reflns_theta_max         26.01
_diffrn_reflns_theta_min         1.92
_exptl_absorpt_coefficient_mu    0.121
_exptl_absorpt_correction_T_max  0.9588
_exptl_absorpt_correction_T_min  0.9418
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker AXS SADABS program'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.569
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             528
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.35
_refine_diff_density_max         0.213
_refine_diff_density_min         -0.275
_refine_diff_density_rms         0.068
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.044
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     360
_refine_ls_number_reflns         4197
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.044
_refine_ls_R_factor_all          0.0786
_refine_ls_R_factor_gt           0.0511
_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^)+(0.0792P)^2^+0.1101P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1242
_refine_ls_wR_factor_ref         0.1412
_reflns_number_gt                2875
_reflns_number_total             4197
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg400322t_si_002.cif
_cod_data_source_block           TMZ-INA
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '459-462' was changed to '460.5(15)'
- the average value was taken and precision was
estimated.

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

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        1080.2(6)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4507752