From an N-Heterocyclic Silacyclopropene to Donor-Supported Silacyclopropenylium Cations
Yao, Shenglai; Xiong, Yun; van Wüllen, Christoph; Driess, Matthias; Organometallics 28 (2009) 1610–; doi:10.1021/om801178g

data_4068959
_publ_section_title
;
 From an N-Heterocyclic Silacyclopropene to Donor-Supported
 Silacyclopropenylium Cations
;
_journal_issue                   6
_journal_name_full               Organometallics
_journal_page_first              1610
_journal_paper_doi               10.1021/om801178g
_journal_volume                  28
_journal_year                    2009
_chemical_formula_sum            'C115 H100 B2 Cl2 F40 N4 O2 Si2'
_chemical_formula_weight         2478.69
_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
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.31.8 (release 12-01-2007 CrysAlis171 .NET)
(compiled Jan 12 2007,17:49:11)
;
_cell_angle_alpha                90.00
_cell_angle_beta                 95.557(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   17.2151(4)
_cell_length_b                   16.0582(4)
_cell_length_c                   20.2620(5)
_cell_measurement_reflns_used    5549
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      28.7785
_cell_measurement_theta_min      2.9323
_cell_volume                     5575.0(2)
_computing_cell_refinement
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.31.8 (release 12-01-2007 CrysAlis171 .NET)
(compiled Jan 12 2007,17:49:11)
;
_computing_data_collection
;
CrysAlis CCD, Oxford Diffraction Ltd.,
Version 1.171.31.8 (release 12-01-2007 CrysAlis171 .NET)
(compiled Jan 12 2007,17:49:11)
;
_computing_data_reduction
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.31.8 (release 12-01-2007 CrysAlis171 .NET)
(compiled Jan 12 2007,17:49:11)
;
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Oxford Diffraction Xcalibur S Sapphire'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray Source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0595
_diffrn_reflns_av_sigmaI/netI    0.1749
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            28584
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.94
_exptl_absorpt_coefficient_mu    0.200
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.477
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             2532
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.27
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.451
_refine_diff_density_min         -0.322
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.756
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     778
_refine_ls_number_reflns         9790
_refine_ls_number_restraints     19
_refine_ls_restrained_S_all      0.801
_refine_ls_R_factor_all          0.1148
_refine_ls_R_factor_gt           0.0384
_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^)+(0.0220P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0576
_refine_ls_wR_factor_ref         0.0662
_reflns_number_gt                4233
_reflns_number_total             9790
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om801178g_si_001.cif
_cod_data_source_block           compound5
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               4068959