Neutral Pentacoordinate Silicon Fluorides Derived from Amidinate, Guanidinate, and Triazapentadienate Ligands and Base-Induced Disproportionation of Si2Cl6 to Stable Silylenes
Rajendra S. Ghadwal; Kevin Pröpper; Birger Dittrich; Peter G. Jones; Herbert W. Roesky; Inorganic Chemistry 50 (2011) 358–364; doi:10.1021/ic1020548

data_4324172
_publ_contact_author_address
;
Institut f\"ur Anorganische Chemie
Georg-August-Universit\"at G\"ottingen 
Tammanstr. 4, 37077 G\"ottingen (Germany)
;
_publ_contact_author_email       hroesky@gwdg.de
_publ_contact_author_name        'Herbert W. Roesky'
_publ_section_title
;
 Neutral Pentacoordinate Silicon Fluorides Derived from Amidinate,
 Guanidinate, and Triazapentadienate Ligands and Base-Induced
 Disproportionation of Si2Cl6 to Stable Silylenes
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              358
_journal_page_last               364
_journal_paper_doi               10.1021/ic1020548
_journal_volume                  50
_journal_year                    2011
_chemical_formula_moiety         'C36 H58 F4 N10 Si2'
_chemical_formula_sum            'C36 H58 F4 N10 Si2'
_chemical_formula_weight         763.10
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           5
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C 2y'
_symmetry_space_group_name_H-M   'C 1 2 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2010-09-30 # Formatted by publCIF
;
_cell_angle_alpha                90.00
_cell_angle_beta                 101.9700(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   14.4012(3)
_cell_length_b                   14.4485(3)
_cell_length_c                   9.8332(2)
_cell_measurement_reflns_used    9942
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      145.167
_cell_measurement_theta_min      8.759
_cell_volume                     2001.56(7)
_computing_cell_refinement       'SAINT (Bruker 2009)'
_computing_data_collection       'APEX2 (Bruker 2009)'
_computing_data_reduction        'SAINT (Bruker 2009)'
_computing_molecular_graphics    'SHELXTL (Bruker 2009)'
_computing_publication_material  publcif
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 0
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Bruker SMART 6000'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  'INCOATEC multilayer optics'
_diffrn_radiation_source         rotating-anode
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0276
_diffrn_reflns_av_sigmaI/netI    0.0234
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            21748
_diffrn_reflns_theta_full        72.93
_diffrn_reflns_theta_max         72.93
_diffrn_reflns_theta_min         4.38
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.293
_exptl_absorpt_correction_T_max  0.4701
_exptl_absorpt_correction_T_min  0.3717
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2009)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.266
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             816
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.208
_refine_diff_density_min         -0.150
_refine_diff_density_rms         0.033
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.025(14)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.072
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     351
_refine_ls_number_reflns         3915
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.072
_refine_ls_R_factor_all          0.0223
_refine_ls_R_factor_gt           0.0218
_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^)+(0.0338P)^2^+0.3835P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0555
_refine_ls_wR_factor_ref         0.0557
_reflns_number_gt                3854
_reflns_number_total             3915
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic1020548_si_004.cif
_cod_data_source_block           2c
_cod_original_sg_symbol_H-M      'C 2'
_cod_database_code               4324172