Metal-Free, Stereospecific Bis-Silylation of Functionalized Alkynes with NHC-Supported Silylaminosilylene
Cui, Haiyan; Ma, Bing; Cui, Chunming; Organometallics 31 (2012) 7339–; doi:10.1021/om3009958

data_4079725
_publ_section_title
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 Metal-Free, Stereospecific Bis-Silylation of Functionalized Alkynes with
 NHC-Supported Silylaminosilylene
;
_journal_issue                   21
_journal_name_full               Organometallics
_journal_page_first              7339
_journal_paper_doi               10.1021/om3009958
_journal_volume                  31
_journal_year                    2012
_chemical_formula_moiety         'C33 H51 Cl N4 Si2'
_chemical_formula_sum            'C33 H51 Cl N4 Si2'
_chemical_formula_weight         595.41
_chemical_name_common            9
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                75.184(10)
_cell_angle_beta                 78.245(15)
_cell_angle_gamma                84.203(17)
_cell_formula_units_Z            4
_cell_length_a                   9.6398(16)
_cell_length_b                   18.262(2)
_cell_length_c                   21.578(2)
_cell_measurement_reflns_used    3790
_cell_measurement_temperature    113(2)
_cell_measurement_theta_max      72.1
_cell_measurement_theta_min      27.5
_cell_volume                     3590.5(8)
_computing_cell_refinement       CrystalClear
_computing_data_collection       CrystalClear
_computing_data_reduction        CrystalClear
_computing_publication_material  'CrystalStructure 3.8'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      113(2)
_diffrn_detector_area_resol_mean 14.63
_diffrn_measured_fraction_theta_full 0.954
_diffrn_measured_fraction_theta_max 0.954
_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           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0724
_diffrn_reflns_av_sigmaI/netI    0.0648
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            44221
_diffrn_reflns_theta_full        72.55
_diffrn_reflns_theta_max         72.55
_diffrn_reflns_theta_min         2.15
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.768
_exptl_absorpt_correction_T_max  0.7414
_exptl_absorpt_correction_T_min  0.6970
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.101
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             1288
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.610
_refine_diff_density_min         -0.560
_refine_diff_density_rms         0.089
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.064
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     747
_refine_ls_number_reflns         13594
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.064
_refine_ls_R_factor_all          0.0666
_refine_ls_R_factor_gt           0.0550
_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^)+(0.0670P)^2^+1.8232P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1354
_refine_ls_wR_factor_ref         0.1516
_reflns_number_gt                11071
_reflns_number_total             13594
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om3009958_si_002.cif
_cod_data_source_block           shelx
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from
2011-04-26.

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        3590.7(8)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4079725