1,3-Dibenzyl-1,2,3,4-tetrahydroquinazoline-2,4-dione
Karimova, Gavhar; Ashurov, Jamshid; Mukhamedov, Nasir; Parpiev, Nusrat A.; Shakhidoyatov, Khusniddin M.; Acta Crystallographica Section E 66 (2010) o1547–; doi:10.1107/S1600536810019938

data_2226431
_publ_section_title
;
 1,3-Dibenzyl-1,2,3,4-tetrahydroquinazoline-2,4-dione
;
_journal_coeditor_code           FJ2301
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1547
_journal_paper_doi               10.1107/S1600536810019938
_journal_volume                  66
_journal_year                    2010
_chemical_formula_iupac          'C22 H18 N2 O2'
_chemical_formula_moiety         'C22 H18 N2 O2'
_chemical_formula_sum            'C22 H18 N2 O2'
_chemical_formula_weight         342.38
_chemical_melting_point          398(2)
_chemical_name_systematic
;
1,3-Dibenzyl-1,2,3,4-tetrahydroquinazoline-2,4-dione
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            16
_cell_length_a                   17.8989(4)
_cell_length_b                   14.0071(4)
_cell_length_c                   27.7222(6)
_cell_measurement_reflns_used    2463
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      35.7902
_cell_measurement_theta_min      3.5295
_cell_volume                     6950.3(3)
_computing_cell_refinement       'CrysAlis Pro (Oxford Diffraction, 2009)'
_computing_data_collection       'CrysAlis Pro (Oxford Diffraction, 2009)'
_computing_data_reduction        'CrysAlis Pro (Oxford Diffraction, 2009)'
_computing_molecular_graphics    'XP in SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 10.2576
_diffrn_measured_fraction_theta_full 0.979
_diffrn_measured_fraction_theta_max 0.979
_diffrn_measurement_device_type  'Oxford Diffraction Xcalibur Ruby'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Cu) X-ray Source'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0295
_diffrn_reflns_av_sigmaI/netI    0.0382
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       34
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            18947
_diffrn_reflns_theta_full        75.82
_diffrn_reflns_theta_max         75.82
_diffrn_reflns_theta_min         4.03
_exptl_absorpt_coefficient_mu    0.678
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.80403
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(CrysAlis Pro; Oxford Diffraction, 2009)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.309
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             2880
_exptl_crystal_size_max          0.5
_exptl_crystal_size_mid          0.4
_exptl_crystal_size_min          0.35
_refine_diff_density_max         0.278
_refine_diff_density_min         -0.140
_refine_ls_extinction_coef       0.00081(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 2008)'
_refine_ls_goodness_of_fit_ref   0.898
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     470
_refine_ls_number_reflns         7088
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.898
_refine_ls_R_factor_all          0.0768
_refine_ls_R_factor_gt           0.0414
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0587P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0997
_refine_ls_wR_factor_ref         0.1115
_reflns_number_gt                4141
_reflns_number_total             7088
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            fj2301.cif
_cod_data_source_block           I
_cod_database_code               2226431
_cod_database_fobs_code          2226431