Multifunctional Octamethyltetrasila[2.2]cyclophanes: Conformational Variations, Circularly Polarized Luminescence, and Organic Electroluminescence.
Shimada, Masaki; Yamanoi, Yoshinori; Ohto, Tatsuhiko; Pham, Song-Toan; Yamada, Ryo; Tada, Hirokazu; Omoto, Kenichiro; Tashiro, Shohei; Shionoya, Mitsuhiko; Hattori, Mineyuki; Jimura, Keiko; Hayashi, Shigenobu; Koike, Hikaru; Iwamura, Munetaka; Nozaki, Koichi; Nishihara, Hiroshi; Journal of the American Chemical Society 139 (2017) 11214–11221; doi:10.1021/jacs.7b05671

data_4131469
_publ_section_title
;
 Multifunctional Octamethyltetrasila[2.2]cyclophanes: Conformational
 Variations, Circularly Polarized Luminescence, and Organic
 Electroluminescence.
;
_journal_issue                   32
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              11214
_journal_page_last               11221
_journal_paper_doi               10.1021/jacs.7b05671
_journal_volume                  139
_journal_year                    2017
_chemical_formula_moiety         'C19 H30 N2 S2 Si4'
_chemical_formula_sum            'C19 H30 N2 S2 Si4'
_chemical_formula_weight         462.92
_space_group_IT_number           1
_space_group_name_Hall           'P 1'
_space_group_name_H-M_alt        'P 1'
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      1
_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
_cell_angle_alpha                81.434(8)
_cell_angle_beta                 88.885(9)
_cell_angle_gamma                78.740(6)
_cell_formula_units_Z            2
_cell_length_a                   7.912(2)
_cell_length_b                   11.836(3)
_cell_length_c                   13.510(4)
_cell_measurement_reflns_used    4077
_cell_measurement_temperature    93
_cell_measurement_theta_max      27.50
_cell_measurement_theta_min      3.30
_cell_volume                     1226.9(6)
_computing_cell_refinement       'CrystalClear-SM Expert 2.0 r3'
_computing_data_collection       'CrystalClear-SM Expert 2.0 r3 (Rigaku, 2009)'
_computing_data_reduction        'CrystalClear-SM Expert 2.0 r3'
_computing_molecular_graphics    'CrystalStructure 4.0'
_computing_publication_material  'CrystalStructure 4.0 (Rigaku, 2010)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SIR92 (Altomare, et al., 1994)'
_diffrn_ambient_temperature      93
_diffrn_detector_area_resol_mean 7.111
_diffrn_measured_fraction_theta_full 0.960
_diffrn_measured_fraction_theta_max 0.960
_diffrn_measurement_device_type  'Rigaku Saturn724'
_diffrn_measurement_method       \w
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0671
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            8599
_diffrn_reflns_theta_full        26.10
_diffrn_reflns_theta_max         26.10
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.420
_exptl_absorpt_correction_T_max  0.971
_exptl_absorpt_correction_T_min  0.881
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'REQAB (Rigaku, 1998)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.253
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             492.00
_exptl_crystal_size_max          0.150
_exptl_crystal_size_mid          0.120
_exptl_crystal_size_min          0.070
_refine_diff_density_max         0.340
_refine_diff_density_min         -0.390
_refine_ls_abs_structure_details
'Flack, H. D. (1983), Acta Cryst. A39, 876-881.  1854 Friedel Pairs'
_refine_ls_abs_structure_Flack   0.14(8)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.044
_refine_ls_hydrogen_treatment    constr
_refine_ls_number_parameters     487
_refine_ls_number_reflns         6539
_refine_ls_number_restraints     3
_refine_ls_R_factor_gt           0.0406
_refine_ls_shift/su_max          0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0558P)^2^+0.7449P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.1034
_reflns_number_gt                6285
_reflns_number_total             6540
_reflns_threshold_expression     F^2^>2.0\s(F^2^)
_cod_data_source_file            ja7b05671_si_012.cif
_cod_data_source_block           exp439chiral
_cod_database_code               4131469