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_4130369
_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(C24H25)(C7H12N2)
_chemical_formula_sum            'C31 H38 N2 Si'
_chemical_formula_weight         466.72
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 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                90
_cell_angle_beta                 97.494(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.3788(7)
_cell_length_b                   13.7166(13)
_cell_length_c                   23.034(2)
_cell_measurement_reflns_used    3864
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      21.74
_cell_measurement_theta_min      2.50
_cell_volume                     2624.7(4)
_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  0.0871
_diffrn_reflns_av_unetI/netI     0.0552
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            41531
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        25.026
_diffrn_reflns_theta_max         25.026
_diffrn_reflns_theta_min         1.732
_diffrn_source                   'sealed tube'
_exptl_absorpt_coefficient_mu    0.111
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.9026
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS-2014/5 (Sheldrick)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.181
_exptl_crystal_description       plate
_exptl_crystal_F_000             1008
_exptl_crystal_size_max          0.180
_exptl_crystal_size_mid          0.120
_exptl_crystal_size_min          0.020
_refine_diff_density_max         0.273
_refine_diff_density_min         -0.257
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.013
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     321
_refine_ls_number_reflns         4619
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.013
_refine_ls_R_factor_all          0.0789
_refine_ls_R_factor_gt           0.0458
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0400P)^2^+1.6000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0964
_refine_ls_wR_factor_ref         0.1092
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3224
_reflns_number_total             4619
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja6b02824_si_011.cif
_cod_data_source_block           dlp150
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4130369
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.980
_shelx_estimated_absorpt_t_max   0.998
_shelx_res_checksum              78420
_shelx_hkl_checksum              42942