<i>N</i>,<i>N</i>'-Bis(4-nitrobenzylidene)ethane-1,2-diamine
Sun, Yu-Xi; You, Zhong-Lu; Zhu, Hai-Liang; Acta Crystallographica Section E 60 (2004) o1707–o1708; doi:10.1107/S1600536804021671

data_2204296
_publ_section_title
;
 <i>N</i>,<i>N</i>'-Bis(4-nitrobenzylidene)ethane-1,2-diamine
;
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1707
_journal_page_last               o1708
_journal_paper_doi               10.1107/S1600536804021671
_journal_volume                  60
_journal_year                    2004
_chemical_formula_iupac          'C16 H14 N4 O4'
_chemical_formula_moiety         'C16 H14 N4 O4'
_chemical_formula_sum            'C16 H14 N4 O4'
_chemical_formula_weight         326.31
_chemical_name_systematic
;
N,N'-Bis(4-nitrobenzylidene)ethane-1,2-diamine
;
_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                 97.494(9)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.156(6)
_cell_length_b                   7.233(5)
_cell_length_c                   11.516(7)
_cell_measurement_reflns_used    807
_cell_measurement_temperature    273(2)
_cell_measurement_theta_max      25.112
_cell_measurement_theta_min      2.721
_cell_volume                     756.1(9)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART (Bruker, 1998)'
_computing_data_reduction        'SAINT (Bruker, 1998)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Sheldrick, 1997)'
_diffrn_ambient_temperature      273(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker SMART CCD area-detector'
_diffrn_measurement_method       \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  0.0381
_diffrn_reflns_av_sigmaI/netI    0.1144
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            4208
_diffrn_reflns_theta_full        26.99
_diffrn_reflns_theta_max         26.99
_diffrn_reflns_theta_min         2.68
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.106
_exptl_absorpt_correction_T_max  0.9916
_exptl_absorpt_correction_T_min  0.9843
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.433
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             340
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.208
_refine_diff_density_min         -0.223
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.000
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     109
_refine_ls_number_reflns         1635
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.000
_refine_ls_R_factor_all          0.1171
_refine_ls_R_factor_gt           0.0480
_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^)+(0.0677P)^2^] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1205
_refine_ls_wR_factor_ref         0.1331
_reflns_number_gt                1092
_reflns_number_total             1635
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ci6439.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2204296
_cod_database_fobs_code          2204296