(1<i>R</i>,2<i>R</i>)-<i>N</i>,<i>N</i>'-Bis(2-pyridylmethylene)cyclohexane-1,2-diamine
Bo Liu; Ming-Jie Zhang; Jin Cui; Jie Zhu; Acta Crystallographica Section E 62 (2006) o5359–o5360; doi:10.1107/S1600536806043388

data_2211454
_publ_section_title
(1<i>R</i>,2<i>R</i>)-<i>N</i>,<i>N</i>'-Bis(2-pyridylmethylene)cyclohexane-1,2-diamine
_journal_coeditor_code           HK2140
_journal_issue                   12
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o5359
_journal_page_last               o5360
_journal_paper_doi               10.1107/S1600536806043388
_journal_volume                  62
_journal_year                    2006
_chemical_formula_iupac          'C18 H20 N4'
_chemical_formula_moiety         'C18 H20 N4'
_chemical_formula_sum            'C18 H20 N4'
_chemical_formula_weight         292.38
_chemical_name_systematic
;
(1R,2R)-N,N'-Bis(2-pyridylmethylene)cyclohexane-1,2-diamine
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.5865(18)
_cell_length_b                   8.7487(18)
_cell_length_c                   21.661(5)
_cell_measurement_reflns_used    5109
_cell_measurement_temperature    113(2)
_cell_measurement_theta_max      28.0
_cell_measurement_theta_min      1.9
_cell_volume                     1627.2(6)
_computing_cell_refinement       CrystalClear
_computing_data_collection       'CrystalClear (Rigaku/MSC, 2004)'
_computing_data_reduction        CrystalClear
_computing_molecular_graphics    'CrystalStructure (Rigaku/MSC, 2004)'
_computing_publication_material  CrystalStructure
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      113(2)
_diffrn_detector_area_resol_mean 7.31
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Rigaku Saturn'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  confocal
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71070
_diffrn_reflns_av_R_equivalents  0.0479
_diffrn_reflns_av_sigmaI/netI    0.0259
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            20457
_diffrn_reflns_theta_full        27.88
_diffrn_reflns_theta_max         27.88
_diffrn_reflns_theta_min         1.88
_exptl_absorpt_coefficient_mu    0.073
_exptl_absorpt_correction_T_max  0.9884
_exptl_absorpt_correction_T_min  0.9782
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(Jacobson, 1998)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.193
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             624
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.187
_refine_diff_density_min         -0.170
_refine_ls_extinction_coef       0.037(4)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL97
_refine_ls_goodness_of_fit_ref   1.053
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     201
_refine_ls_number_reflns         2239
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.053
_refine_ls_R_factor_all          0.0414
_refine_ls_R_factor_gt           0.0398
_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^)+(0.0487P)^2^+0.3527P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0958
_refine_ls_wR_factor_ref         0.0969
_reflns_number_gt                2187
_reflns_number_total             2239
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            hk2140.cif
_cod_data_source_block           I
_cod_database_code               2211454
_cod_database_fobs_code          2211454