Activation of 7-Silanorbornadienes by N-Heterocyclic Carbenes: A Selective Way to N-Heterocyclic-Carbene-Stabilized Silylenes.
Lutters, Dennis; Severin, Claudia; Schmidtmann, Marc; Müller, Thomas; Journal of the American Chemical Society 138 (2016) 6061–6067; doi:10.1021/jacs.6b02824

data_4130370
_publ_section_title
;
 Activation of 7-Silanorbornadienes by N-Heterocyclic Carbenes: A
 Selective Way to N-Heterocyclic-Carbene-Stabilized Silylenes.
;
_journal_issue                   18
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              6061
_journal_page_last               6067
_journal_paper_doi               10.1021/jacs.6b02824
_journal_volume                  138
_journal_year                    2016
_chemical_formula_structural     'SiH(C36H49)(C7H12N2) *C6H12'
_chemical_formula_sum            'C49 H74 N2 Si'
_chemical_formula_weight         719.19
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                106.7741(15)
_cell_angle_beta                 103.0536(16)
_cell_angle_gamma                99.4585(16)
_cell_formula_units_Z            2
_cell_length_a                   11.1760(6)
_cell_length_b                   14.3407(8)
_cell_length_c                   15.4197(9)
_cell_measurement_reflns_used    9907
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.07
_cell_measurement_theta_min      2.43
_cell_volume                     2234.2(2)
_computing_cell_refinement       'Bruker SAINT V8.34A'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT V8.34A'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-2013/1 (Sheldrick, 2013)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0333
_diffrn_reflns_av_unetI/netI     0.0254
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            92948
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         30.033
_diffrn_reflns_theta_min         1.441
_diffrn_source                   'sealed tube'
_exptl_absorpt_coefficient_mu    0.086
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.9599
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS-2014/5 (Sheldrick)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.069
_exptl_crystal_description       block
_exptl_crystal_F_000             792
_exptl_crystal_size_max          0.260
_exptl_crystal_size_mid          0.140
_exptl_crystal_size_min          0.100
_refine_diff_density_max         1.567
_refine_diff_density_min         -0.758
_refine_diff_density_rms         0.069
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.002
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     513
_refine_ls_number_reflns         13073
_refine_ls_number_restraints     63
_refine_ls_restrained_S_all      1.029
_refine_ls_R_factor_all          0.0809
_refine_ls_R_factor_gt           0.0632
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+2.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1733
_refine_ls_wR_factor_ref         0.1899
_reflns_Friedel_coverage         0.000
_reflns_number_gt                10346
_reflns_number_total             13073
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja6b02824_si_013.cif
_cod_data_source_block           dlp160
_cod_database_code               4130370
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.978
_shelx_estimated_absorpt_t_max   0.991
_shelx_res_checksum              113
_shelx_hkl_checksum              56356