Synthesis, Structures, and Unusual Photoluminescence of O- and N-Functional Cyclohexasilanes
Stueger, Harald; Fuerpass, Gottfried; Renger, Karin; Baumgartner, Judith; Organometallics 24 (2005) 6374–; doi:10.1021/om050587w

data_4076089
_publ_section_title
;
 Synthesis, Structures, and Unusual Photoluminescence of O- and
 N-Functional Cyclohexasilanes
;
_journal_issue                   26
_journal_name_full               Organometallics
_journal_page_first              6374
_journal_paper_doi               10.1021/om050587w
_journal_volume                  24
_journal_year                    2005
_chemical_formula_sum            'C22 H66 N2 Si10'
_chemical_formula_weight         639.67
_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                 91.90(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   12.356(3)
_cell_length_b                   8.4870(17)
_cell_length_c                   18.520(4)
_cell_measurement_temperature    100(2)
_cell_volume                     1941.0(7)
_computing_cell_refinement       'Bruker XSCANS'
_computing_data_collection       'Bruker XSCANS'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker P4'
_diffrn_measurement_method       '\w 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  0.0517
_diffrn_reflns_av_sigmaI/netI    0.0395
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            14908
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         1.65
_exptl_absorpt_coefficient_mu    0.354
_exptl_absorpt_correction_T_max  0.9074
_exptl_absorpt_correction_T_min  0.8485
_exptl_absorpt_correction_type   SADABS
_exptl_absorpt_process_details   XPREP
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.095
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       blocks
_exptl_crystal_F_000             704
_exptl_crystal_size_max          0.48
_exptl_crystal_size_mid          0.36
_exptl_crystal_size_min          0.28
_refine_diff_density_max         0.841
_refine_diff_density_min         -0.315
_refine_diff_density_rms         0.089
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.068
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     165
_refine_ls_number_reflns         3971
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.068
_refine_ls_R_factor_all          0.0425
_refine_ls_R_factor_gt           0.0391
_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^)+(0.0708P)^2^+0.4022P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1071
_refine_ls_wR_factor_ref         0.1091
_reflns_number_gt                3557
_reflns_number_total             3971
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om050587wsi20050713_102513.cif
_cod_data_source_block           289j
_cod_original_cell_volume        1940.9(7)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               4076089