(4,6-Diamino-1,3-phenylene)bis(phenylmethanone)
Tian, Da-Min; Xu, Hui; Acta Crystallographica Section E 67 (2011) o2619–; doi:10.1107/S1600536811032752

data_2232079
_publ_section_title
;
 (4,6-Diamino-1,3-phenylene)bis(phenylmethanone)
;
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2619
_journal_paper_doi               10.1107/S1600536811032752
_journal_volume                  67
_journal_year                    2011
_chemical_formula_iupac          'C20 H16 N2 O2'
_chemical_formula_moiety         'C20 H16 N2 O2'
_chemical_formula_sum            'C20 H16 N2 O2'
_chemical_formula_weight         316.35
_chemical_name_systematic
;
(4,6-Diamino-1,3-phenylene)bis(phenylmethanone)
;
_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
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 104.32(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.602(3)
_cell_length_b                   7.2350(14)
_cell_length_c                   16.786(3)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      13
_cell_measurement_theta_min      9
_cell_volume                     1600.6(6)
_computing_cell_refinement       'CAD-4 EXPRESS (Enraf--Nonius, 1985)'
_computing_data_collection       'CAD-4 EXPRESS (Enraf--Nonius, 1985)'
_computing_data_reduction        'XCAD4 (Harms & Wocadlo, 1995)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Nonius CAD-4'
_diffrn_measurement_method       \w/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  0.0501
_diffrn_reflns_av_sigmaI/netI    0.0402
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            3034
_diffrn_reflns_theta_full        25.26
_diffrn_reflns_theta_max         25.26
_diffrn_reflns_theta_min         1.73
_diffrn_standards_decay_%        1
_diffrn_standards_interval_count 200
_diffrn_standards_interval_time  120
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.086
_exptl_absorpt_correction_T_max  0.9915
_exptl_absorpt_correction_T_min  0.9747
_exptl_absorpt_correction_type   psi-scan
_exptl_absorpt_process_details   '(North <i>et al.</i>, 1968)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.313
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             664
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.207
_refine_diff_density_min         -0.160
_refine_ls_extinction_coef       0.033(4)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.002
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     218
_refine_ls_number_reflns         2905
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.002
_refine_ls_R_factor_all          0.0838
_refine_ls_R_factor_gt           0.0519
_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^)+(0.0950P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1372
_refine_ls_wR_factor_ref         0.1591
_reflns_number_gt                1956
_reflns_number_total             2905
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            vm2115.cif
_cod_data_source_block           I
_cod_original_cell_volume        1600.6(5)
_cod_original_sg_symbol_H-M      P21/n
_cod_database_code               2232079
_cod_database_fobs_code          2232079