Comparative studies of the geometric and electronic properties of 1,1-disubstituted-2,3,4,5-tetraphenylsiloles and 1,1,2,2-tetramethyl-3,4,5,6-tetraphenyl-1,2-disila-3,5-cyclohexadiene
Xiaowei Zhan; Chad Risko; Alexander Korlyukov; Francis Sena; Tatiana V. Timofeeva; Mikhail Yu. Antipin; Stephen Barlow; Jean-Luc Brédas; Seth R. Marder; Journal of Materials Chemistry 16 (2006) 3814–; doi:10.1039/b605343b

data_7203420
_publ_section_title
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 Comparative studies of the geometric and electronic properties of
 1,1-disubstituted-2,3,4,5-tetraphenylsiloles and
 1,1,2,2-tetramethyl-3,4,5,6-tetraphenyl-1,2-disila-3,5-cyclohexadiene
;
_journal_issue                   39
_journal_name_full               'Journal of Materials Chemistry'
_journal_page_first              3814
_journal_paper_doi               10.1039/b605343b
_journal_volume                  16
_journal_year                    2006
_chemical_formula_moiety         'C62 H52 Si2, CHCl3'
_chemical_formula_sum            'C63 H53 Cl3 Si2'
_chemical_formula_weight         972.58
_chemical_name_systematic
;
?
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                97.790(8)
_cell_angle_beta                 104.678(8)
_cell_angle_gamma                99.573(9)
_cell_formula_units_Z            2
_cell_length_a                   10.356(4)
_cell_length_b                   13.044(5)
_cell_length_c                   19.594(7)
_cell_measurement_reflns_used    708
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      22.68
_cell_measurement_theta_min      2.47
_cell_volume                     2480.6(16)
_computing_cell_refinement       'SAINTPlus (Bruker, 1998a)'
_computing_data_collection       'SMART (Bruker, 1998b)'
_computing_data_reduction        'SAINTPlus (Bruker, 1998a)'
_computing_molecular_graphics    'SHELXTL ver. 5.1 (Sheldrick, 1998b)'
_computing_publication_material  'SHELXTL ver. 5.1 (Sheldrick, 1998b)'
_computing_structure_refinement  'SHELXTL ver. 5.1 (Sheldrick, 1998b)'
_computing_structure_solution    'SHELXTL ver. 5.1 (Sheldrick, 1998b)'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 0.891
_diffrn_measured_fraction_theta_max 0.891
_diffrn_measurement_device_type  'Bruker Smart 1000 CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0621
_diffrn_reflns_av_sigmaI/netI    0.2249
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            18367
_diffrn_reflns_theta_full        30.08
_diffrn_reflns_theta_max         30.08
_diffrn_reflns_theta_min         1.77
_exptl_absorpt_coefficient_mu    0.275
_exptl_absorpt_correction_T_max  0.9945
_exptl_absorpt_correction_T_min  0.9220
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1998a)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.302
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1020
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.02
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.773
_refine_diff_density_min         -0.662
_refine_diff_density_rms         0.073
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.940
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     613
_refine_ls_number_reflns         13000
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.940
_refine_ls_R_factor_all          0.2242
_refine_ls_R_factor_gt           0.0704
_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^)+(0.0231P)^2^+1.66P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1260
_refine_ls_wR_factor_ref         0.1509
_reflns_number_gt                3945
_reflns_number_total             13000
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b605343b.txt
_cod_data_source_block           COMPOUND_II_CHLOROFORM_SOLVATE
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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 
;
_cod_original_cell_volume        2480.6(15)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7203420