<i>N</i>,<i>N</i>'-Bis[(3,4-methylenedioxyphenyl)methylene]phenylene-1,4-diamine
Yang, Shu-Ping; Li-Jun, Han; Da-Qi, Wang; Tie-Zhu, Ding; Acta Crystallographica Section E 63 (2007) o244–o246; doi:10.1107/S1600536806052755

data_2211844
_publ_section_title
<i>N</i>,<i>N</i>'-Bis[(3,4-methylenedioxyphenyl)methylene]phenylene-1,4-diamine
_journal_coeditor_code           HG2148
_journal_issue                   1
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o244
_journal_page_last               o246
_journal_paper_doi               10.1107/S1600536806052755
_journal_volume                  63
_journal_year                    2007
_chemical_formula_iupac          'C22 H20 N2 O4'
_chemical_formula_moiety         'C22 H20 N2 O4'
_chemical_formula_sum            'C22 H20 N2 O4'
_chemical_formula_weight         376.40
_chemical_melting_point          453
_chemical_name_systematic
;
N,N'-Bis[(3,4-methylenedioxyphenyl)methylene]phenylene-1,4-diamine
;
_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                 101.624(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   14.2255(14)
_cell_length_b                   4.9257(16)
_cell_length_c                   12.7837(18)
_cell_measurement_reflns_used    1254
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      26.694
_cell_measurement_theta_min      2.924
_cell_volume                     877.4(3)
_computing_cell_refinement       'SAINT (Siemens, 1996)'
_computing_data_collection       'SMART (Siemens, 1996)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'SHELXTL (Sheldrick, 1997b)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997a)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997a)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Siemens SMART 1000 CCD area-detector'
_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  0.0410
_diffrn_reflns_av_sigmaI/netI    0.0467
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            4222
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         1.46
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.099
_exptl_absorpt_correction_T_max  0.9872
_exptl_absorpt_correction_T_min  0.9521
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.425
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       columnar
_exptl_crystal_F_000             396
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.41
_exptl_crystal_size_min          0.13
_refine_diff_density_max         0.302
_refine_diff_density_min         -0.235
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.016
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     127
_refine_ls_number_reflns         1532
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.016
_refine_ls_R_factor_all          0.0743
_refine_ls_R_factor_gt           0.0468
_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^)+(0.067P)^2^+0.1742P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1143
_refine_ls_wR_factor_ref         0.1356
_reflns_number_gt                1037
_reflns_number_total             1532
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            hg2148.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2211844
_cod_database_fobs_code          2211844