Reactions of a Bis-silylene (LSi−SiL, L = PhC(NtBu)2) and a Heteroleptic Chloro Silylene (LSiCl) with Benzil: Formation of Bis(siladioxolene) and Monosiladioxolene Analogue with Five-Coordinate Silicon Atoms in Both Ring Systems
Tavčar, Gašper; Sen, Sakya S.; Roesky, Herbert W.; Hey, Jakob; Kratzert, Daniel; Stalke, Dietmar; Organometallics 29 (2010) 3930–; doi:10.1021/om100581u

data_4066704
_publ_section_title
;
 Reactions of a Bis-silylene (LSi&#x2212;SiL, L = PhC(NtBu)2) and a
 Heteroleptic Chloro Silylene (LSiCl) with Benzil: Formation of
 Bis(siladioxolene) and Monosiladioxolene Analogue with Five-Coordinate
 Silicon Atoms in Both Ring Systems
;
_journal_issue                   17
_journal_name_full               Organometallics
_journal_page_first              3930
_journal_paper_doi               10.1021/om100581u
_journal_volume                  29
_journal_year                    2010
_chemical_formula_moiety         'C58 H66 N4 O4 Si2, 0.5(C7 H8)'
_chemical_formula_sum            'C61.5 H70 N4 O4 Si2'
_chemical_formula_weight         985.39
_chemical_melting_point          156
_chemical_name_systematic
; 
 ? 
;
_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                 109.503(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.7468(18)
_cell_length_b                   21.681(3)
_cell_length_c                   19.780(3)
_cell_measurement_reflns_used    9885
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.697
_cell_measurement_theta_min      2.1735
_cell_volume                     5557.1(14)
_computing_cell_refinement       'SAINT V7.66A'
_computing_data_collection       'APEX2 v.2009.7-0'
_computing_data_reduction        'SAINT V7.46A'
_computing_molecular_graphics    'XSHELL in SHELXTL-97'
_computing_publication_material  'XSHELL in SHELXTL-97'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker Smart Apex II with D8-Goniometer'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  'INCOATEC Quazar mirror optics'
_diffrn_radiation_source         'INCOATEC Mo Microsource'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0523
_diffrn_reflns_av_sigmaI/netI    0.0303
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       27
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            84719
_diffrn_reflns_theta_full        26.72
_diffrn_reflns_theta_max         26.72
_diffrn_reflns_theta_min         1.44
_exptl_absorpt_coefficient_mu    0.114
_exptl_absorpt_correction_T_max  0.9880
_exptl_absorpt_correction_T_min  0.9149
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS-2008/2
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.178
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2108
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.725
_refine_diff_density_min         -0.628
_refine_diff_density_rms         0.048
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.050
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     708
_refine_ls_number_reflns         11781
_refine_ls_number_restraints     101
_refine_ls_restrained_S_all      1.087
_refine_ls_R_factor_all          0.0540
_refine_ls_R_factor_gt           0.0450
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0396P)^2^+4.3745P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1079
_refine_ls_wR_factor_ref         0.1142
_reflns_number_gt                9962
_reflns_number_total             11781
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om100581u_si_001.cif
_cod_data_source_block           p21c
_cod_original_cell_volume        5556.9(13)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_original_formula_sum        'C61.50 H70 N4 O4 Si2'
_cod_database_code               4066704