1,3,3,5-Tetramethyl-1<i>H</i>-1,5-benzodiazepine-2,4(3<i>H</i>,5<i>H</i>)-dione
Dardouri, Rachida; Rodi, Youssef Kandri; Saffon, Natalie; Essassi, El Mokhtar; Ng, Seik Weng; Acta Crystallographica Section E 67 (2011) o783–; doi:10.1107/S1600536811007501

data_2229590
_publ_section_title
;
 1,3,3,5-Tetramethyl-1<i>H</i>-1,5-benzodiazepine-2,4(3<i>H</i>,5<i>H</i>)-dione
;
_journal_coeditor_code           BT5483
_journal_issue                   4
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o783
_journal_paper_doi               10.1107/S1600536811007501
_journal_volume                  67
_journal_year                    2011
_chemical_formula_iupac          'C13 H16 N2 O2'
_chemical_formula_moiety         'C13 H16 N2 O2'
_chemical_formula_sum            'C13 H16 N2 O2'
_chemical_formula_weight         232.28
_chemical_name_systematic
;
1,3,3,5-Tetramethyl-1<i>H</i>-1,5-benzodiazepine-2,4(3<i>H</i>,5<i>H</i>)-dione
;
_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                 103.6750(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.51120(10)
_cell_length_b                   10.1731(2)
_cell_length_c                   15.8697(3)
_cell_measurement_reflns_used    4653
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      32.5
_cell_measurement_theta_min      2.4
_cell_volume                     1178.26(4)
_computing_cell_refinement       'SAINT (Bruker, 2008)'
_computing_data_collection       'APEX2 (Bruker, 2008)'
_computing_data_reduction        'SAINT (Bruker, 2008)'
_computing_molecular_graphics    'X-SEED (Barbour, 2001)'
_computing_publication_material  'publCIF (Westrip, 2010)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      295(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker X8 APEXII'
_diffrn_measurement_method       '\f and \w'
_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  0.0419
_diffrn_reflns_av_sigmaI/netI    0.0224
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            20993
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.40
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.090
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.309
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             496
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.264
_refine_diff_density_min         -0.199
_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     158
_refine_ls_number_reflns         2719
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.039
_refine_ls_R_factor_all          0.0538
_refine_ls_R_factor_gt           0.0388
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0537P)^2^+0.2800P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0976
_refine_ls_wR_factor_ref         0.1081
_reflns_number_gt                2130
_reflns_number_total             2719
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            bt5483.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2229590
_cod_database_fobs_code          2229590