1,4-Dichloro-1,4-diphenyl-2,3-diazabuta-1,3-diene
Tandon, Vishnu K.; Sharon, Ashoke; Bandichhor, Rakeshawar; Maulik, Prakas R.; Acta Crystallographica Section E 58 (2002) o869–o870; doi:10.1107/S1600536802012370

data_2201379
_publ_section_title
;
 1,4-Dichloro-1,4-diphenyl-2,3-diazabuta-1,3-diene
;
_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o869
_journal_page_last               o870
_journal_paper_doi               10.1107/S1600536802012370
_journal_volume                  58
_journal_year                    2002
_chemical_formula_iupac          'C14 H10 Cl2 N2'
_chemical_formula_moiety         'C14 H10 Cl2 N2'
_chemical_formula_sum            'C14 H10 Cl2 N2'
_chemical_formula_weight         277.14
_chemical_name_systematic
;
1,4-Dicholoro-1,4-diphenyl-2,3-diazabuta-1,3-diene
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 99.250(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.5010(10)
_cell_length_b                   7.5319(7)
_cell_length_c                   14.958(2)
_cell_measurement_reflns_used    39
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      12.45
_cell_measurement_theta_min      4.45
_cell_volume                     1278.9(2)
_computing_cell_refinement       XSCANS
_computing_data_collection       'XSCANS (Siemens, 1996)'
_computing_data_reduction        XSCANS
_computing_molecular_graphics    SHELXTL-NT
_computing_publication_material  SHELXTL-NT
_computing_structure_refinement  SHELXTL-NT
_computing_structure_solution    'SHELXTL-NT (Bruker, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker P4'
_diffrn_measurement_method       \q-2\q
_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  0.0157
_diffrn_reflns_av_sigmaI/netI    0.0200
_diffrn_reflns_limit_h_max       1
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       1
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            3023
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.08
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 97
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.489
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.439
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             568
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.38
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.155
_refine_diff_density_min         -0.240
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.063
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     163
_refine_ls_number_reflns         2245
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.063
_refine_ls_R_factor_all          0.0365
_refine_ls_R_factor_gt           0.0313
_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^)+(0.0415P)^2^+0.2899P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0860
_refine_ls_wR_factor_ref         0.0897
_reflns_number_gt                1989
_reflns_number_total             2245
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ci6140.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2201379