Isolation of a Stable, Acyclic, Two-Coordinate Silylene
Brian D. Rekken; Thomas M. Brown; James C. Fettinger; Heikki M. Tuononen; Philip P. Power; Journal of the American Chemical Society 134 (2012) 6504–6507; doi:10.1021/ja301091v

data_4117840
_publ_section_title
;
 Isolation of a Stable, Acyclic, Two-Coordinate Silylene
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              6504
_journal_page_last               6507
_journal_paper_doi               10.1021/ja301091v
_journal_volume                  134
_journal_year                    2012
_chemical_formula_moiety         'C48 H52 S2 Si'
_chemical_formula_sum            'C48 H52 S2 Si'
_chemical_formula_weight         721.11
_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                 95.2050(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   17.1406(7)
_cell_length_b                   11.7612(5)
_cell_length_c                   40.5573(16)
_cell_measurement_reflns_used    9873
_cell_measurement_temperature    90(2)
_cell_measurement_theta_max      28.97
_cell_measurement_theta_min      2.51
_cell_volume                     8142.4(6)
_computing_cell_refinement       'SAINT (7.68A) (Bruker, 2009)'
_computing_data_collection       'Apex2 (2010-11.3) (Bruker, 2010)'
_computing_data_reduction        'SAINT (7.68A) (Bruker, 2009)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      90(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \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  0.0466
_diffrn_reflns_av_sigmaI/netI    0.0363
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       52
_diffrn_reflns_limit_l_min       -52
_diffrn_reflns_number            90174
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.38
_exptl_absorpt_coefficient_mu    0.192
_exptl_absorpt_correction_T_max  0.9582
_exptl_absorpt_correction_T_min  0.9136
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2008/1 (Sheldrick, 2008)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.176
_exptl_crystal_description       Block
_exptl_crystal_F_000             3088
_exptl_crystal_size_max          0.48
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.325
_refine_diff_density_min         -0.283
_refine_diff_density_rms         0.049
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.010
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     958
_refine_ls_number_reflns         18675
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.010
_refine_ls_R_factor_all          0.0564
_refine_ls_R_factor_gt           0.0390
_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^)+(0.0429P)^2^+4.4895P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0925
_refine_ls_wR_factor_ref         0.1017
_reflns_number_gt                14562
_reflns_number_total             18675
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja301091v_si_004.cif
_cod_data_source_block           bdr198
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4117840