4,4',6,6'-Tetrahydroseleno-2,2'-[(<i>E</i>,<i>E</i>)-cyclohexane-1,2-diylbis(nitrilomethylidyne)]diphenol
Wang, Qiang; Zha, Ru-Hua; Yuan, Ji-Wen; Zeng, Qing-Fu; Acta Crystallographica Section E 65 (2009) o2163–; doi:10.1107/S1600536809031572

data_2223072
_publ_section_title
4,4',6,6'-Tetrahydroseleno-2,2'-[(<i>E</i>,<i>E</i>)-cyclohexane-1,2-diylbis(nitrilomethylidyne)]diphenol
_journal_coeditor_code           HB5041
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2163
_journal_paper_doi               10.1107/S1600536809031572
_journal_volume                  65
_journal_year                    2009
_chemical_formula_iupac          'C20 H22 N2 O2 Se4'
_chemical_formula_moiety         'C20 H22 N2 O2 Se4'
_chemical_formula_sum            'C20 H22 N2 O2 Se4'
_chemical_formula_weight         638.24
_chemical_name_systematic
;
4,4',6,6'-Tetrahydroseleno-2,2'-[(<i>E</i>,<i>E</i>)-cyclohexane-1,2-
diylbis(nitrilomethylidyne)]diphenol
;
_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                 109.865(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.493(2)
_cell_length_b                   9.2975(15)
_cell_length_c                   16.353(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      12
_cell_measurement_theta_min      9
_cell_volume                     2215.4(5)
_computing_cell_refinement       'CAD-4 Software (Enraf--Nonius, 1989)'
_computing_data_collection       'CAD-4 Software (Enraf--Nonius, 1989)'
_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      296(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Enraf--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  0.0482
_diffrn_reflns_av_sigmaI/netI    0.0549
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            11901
_diffrn_reflns_theta_full        25.71
_diffrn_reflns_theta_max         25.71
_diffrn_reflns_theta_min         1.40
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    6.642
_exptl_absorpt_correction_T_max  0.299
_exptl_absorpt_correction_T_min  0.225
_exptl_absorpt_correction_type   psi-scan
_exptl_absorpt_process_details   '(North <i>et al.</i>,  1968)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.914
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1232
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.843
_refine_diff_density_min         -0.537
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.064
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     255
_refine_ls_number_reflns         4196
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.064
_refine_ls_R_factor_all          0.0787
_refine_ls_R_factor_gt           0.0408
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0494P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0941
_refine_ls_wR_factor_ref         0.1052
_reflns_number_gt                2743
_reflns_number_total             4196
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            hb5041.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2223072
_cod_database_fobs_code          2223072