Synthesis of an Isolable Bis(silylene)-Stabilized Silylone and Its Reactivity Toward Small Gaseous Molecules.
Wang, Yuwen; Karni, Miriam; Yao, Shenglai; Kaushansky, Alexander; Apeloig, Yitzhak; Driess, Matthias; Journal of the American Chemical Society 141 (2019) 12916–12927; doi:10.1021/jacs.9b06603

data_4127739
_publ_section_title
;
 Synthesis of an Isolable Bis(silylene)-Stabilized Silylone and Its
 Reactivity Toward Small Gaseous Molecules.
;
_journal_issue                   32
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              12916
_journal_page_last               12927
_journal_paper_doi               10.1021/jacs.9b06603
_journal_volume                  141
_journal_year                    2019
_chemical_formula_sum            'C45 H58 Cl2 N4 O Si3'
_chemical_formula_weight         826.12
_space_group_crystal_system      orthorhombic
_space_group_IT_number           33
_space_group_name_Hall           'P 2c -2n'
_space_group_name_H-M_alt        'P n a 21'
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           'CrysAlisPro 1.171.38.46 (Rigaku OD, 2015)'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   23.5865(16)
_cell_length_b                   24.6752(9)
_cell_length_c                   8.9356(3)
_cell_measurement_reflns_used    3135
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      68.5270
_cell_measurement_theta_min      2.5590
_cell_volume                     5200.5(4)
_computing_cell_refinement       'CrysAlisPro 1.171.38.46 (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.38.46 (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.38.46 (Rigaku OD, 2015)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'SuperNova, Single source at offset, Atlas'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.1585
_diffrn_reflns_av_unetI/netI     0.1333
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       28
_diffrn_reflns_limit_h_min       -28
_diffrn_reflns_limit_k_max       29
_diffrn_reflns_limit_k_min       -29
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            36061
_diffrn_reflns_point_group_measured_fraction_full 0.925
_diffrn_reflns_point_group_measured_fraction_max 0.925
_diffrn_reflns_theta_full        67.477
_diffrn_reflns_theta_max         67.477
_diffrn_reflns_theta_min         2.592
_exptl_absorpt_coefficient_mu    2.036
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.10497
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.38.46 (Rigaku Oxford Diffraction, 2015)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.055
_exptl_crystal_description       plate
_exptl_crystal_F_000             1760
_exptl_crystal_size_max          0.170
_exptl_crystal_size_mid          0.090
_exptl_crystal_size_min          0.040
_refine_diff_density_max         0.235
_refine_diff_density_min         -0.288
_refine_diff_density_rms         0.047
_refine_ls_abs_structure_details
;
 Flack x determined using 1259 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.09(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.947
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     510
_refine_ls_number_reflns         8679
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.947
_refine_ls_R_factor_all          0.1171
_refine_ls_R_factor_gt           0.0637
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0449P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1219
_refine_ls_wR_factor_ref         0.1476
_reflns_Friedel_coverage         0.731
_reflns_Friedel_fraction_full    0.840
_reflns_Friedel_fraction_max     0.840
_reflns_number_gt                5106
_reflns_number_total             8679
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja9b06603_si_002.cif
_cod_data_source_block           Compound-2
_cod_database_code               4127739
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.723
_shelx_estimated_absorpt_t_max   0.923
_shelx_res_checksum              10912
_shelx_hkl_checksum              46485
_shelx_fab_checksum              58865