The occurrence of through-bond orbital interactions in an α,ω donor–acceptor substituted bi(cyclohexylidene) and bi(cyclohexyl). X-Ray diffraction, UV–Vis absorption and photoelectron spectroscopy, ab initio SCF-MO and natural bond orbital analyses†
Oosterbaan, Wibren D.; Havenith, Remco W. A.; van Walree, Cornelis A.; Jenneskens, Leonardus W.; Gleiter, Rolf; Kooijman, Huub; Spek, Anthony L.; Journal of the Chemical Society, Perkin Transactions 2  (2001) 1066–; doi:10.1039/b102410h

data_7238081
_publ_section_title
;
 The occurrence of through-bond orbital interactions in an \a,\w
 donor--acceptor substituted bi(cyclohexylidene) and bi(cyclohexyl). X-Ray
 diffraction, UV--Vis absorption and photoelectron spectroscopy, ab initio
 SCF-MO and natural bond orbital analyses&#x2020;
;
_journal_issue                   7
_journal_name_full
'Journal of the Chemical Society, Perkin Transactions 2'
_journal_page_first              1066
_journal_paper_doi               10.1039/b102410h
_journal_year                    2001
_chemical_compound_source        'see text'
_chemical_formula_moiety         'C20 H23 N3'
_chemical_formula_sum            'C20 H23 N3'
_chemical_formula_weight         305.41
_space_group_IT_number           11
_space_group_name_Hall           '-P 2yb'
_space_group_name_H-M_alt        'P 1 21/m 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yb'
_symmetry_space_group_name_H-M   'P 1 21/m 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90
_cell_angle_beta                 92.286(11)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   7.0137(10)
_cell_length_b                   11.941(2)
_cell_length_c                   9.6449(17)
_cell_measurement_reflns_used    365
_cell_measurement_temperature    150
_cell_measurement_theta_max      25.0
_cell_measurement_theta_min      2.0
_cell_volume                     807.1(2)
_computing_cell_refinement       'Denzo (Otwinowski & Minor, 1997)'
_computing_data_collection       'Collect (Nonius, 1998)'
_computing_data_reduction        'Denzo (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'PLATON (Spek, 2001)'
_computing_publication_material  'PLATON (Spek, 2001)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      150
_diffrn_detector_area_resol_mean 18.4
_diffrn_measured_fraction_theta_full 0.99
_diffrn_measured_fraction_theta_max 0.99
_diffrn_measurement_device_type  'Nonius Kappa CCD area detector'
_diffrn_measurement_method       '\f scans and \w scans with \k offset'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Rotating Anode'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0446
_diffrn_reflns_av_sigmaI/netI    0.0530
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            4545
_diffrn_reflns_reduction_process
;
?
;
_diffrn_reflns_theta_full        26.42
_diffrn_reflns_theta_max         26.42
_diffrn_reflns_theta_min         2.11
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.075
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.257
_exptl_crystal_density_method    'Not Measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             328
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.357
_refine_diff_density_min         -0.210
_refine_diff_density_rms         0.050
_refine_ls_abs_structure_Flack   none
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.954
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     151
_refine_ls_number_reflns         1724
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.954
_refine_ls_R_factor_all          0.0739
_refine_ls_R_factor_gt           0.0545
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(F~o~^2^)+(0.01P)^2^+0.75P] where P=(F~o~^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1172
_refine_ls_wR_factor_ref         0.1277
_reflns_number_gt                1346
_reflns_number_total             1724
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b102410h.txt
_cod_data_source_block           2
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/RSC/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      'P 21/m'
_cod_database_code               7238081