<i>N</i>,<i>N</i>'-Bis(3,4-dimethoxybenzylidene)ethylenediamine
Li, Yu-Guang; Zhu, Hai-Liang; Chen, Xin-Zhi; Xin, Yun-Chuan; Zhu, Yan-Hu; Acta Crystallographica Section E 62 (2006) o687–o688; doi:10.1107/S1600536806001759

data_2208183
_publ_section_title
;
 <i>N</i>,<i>N</i>'-Bis(3,4-dimethoxybenzylidene)ethylenediamine
;
_journal_coeditor_code           TK6299
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o687
_journal_page_last               o688
_journal_paper_doi               10.1107/S1600536806001759
_journal_volume                  62
_journal_year                    2006
_chemical_formula_iupac          'C20 H24 N2 O4'
_chemical_formula_moiety         'C20 H24 N2 O4'
_chemical_formula_sum            'C20 H24 N2 O4'
_chemical_formula_weight         356.41
_chemical_name_systematic
;
Bis(3,4-dimethoxybenzylidene)ethylenediamine
;
_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
_cell_angle_beta                 97.125(4)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   13.126(3)
_cell_length_b                   8.531(2)
_cell_length_c                   8.393(2)
_cell_measurement_reflns_used    2443
_cell_measurement_temperature    292(2)
_cell_measurement_theta_max      23.0
_cell_measurement_theta_min      2.7
_cell_volume                     932.6(4)
_computing_cell_refinement       'SAINT (Bruker, 2003)'
_computing_data_collection       'SMART (Bruker, 2003)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'SHELXTL (Sheldrick, 1997b)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997a)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997a)'
_diffrn_ambient_temperature      292(2)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'Bruker APEX 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  0.142
_diffrn_reflns_av_sigmaI/netI    0.070
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            10357
_diffrn_reflns_theta_full        27.5
_diffrn_reflns_theta_max         27.5
_diffrn_reflns_theta_min         1.6
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.089
_exptl_absorpt_correction_T_max  0.995
_exptl_absorpt_correction_T_min  0.897
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.269
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             380
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.23
_refine_diff_density_min         -0.21
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.94
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     120
_refine_ls_number_reflns         2111
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.94
_refine_ls_R_factor_all          0.080
_refine_ls_R_factor_gt           0.056
_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^)+(0.0823P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.140
_refine_ls_wR_factor_ref         0.152
_reflns_number_gt                1415
_reflns_number_total             2111
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            tk6299.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2208183
_cod_database_fobs_code          2208183