Disilene-Silylene Interconversion: A Synthetically Accessible Acyclic Bis(silyl)silylene.
Reiter, Dominik; Holzner, Richard; Porzelt, Amelie; Altmann, Philipp J.; Frisch, Philipp; Inoue, Shigeyoshi; Journal of the American Chemical Society 141 (2019) 13536–13546; doi:10.1021/jacs.9b05318

data_4133682
_publ_section_title
;
 Disilene-Silylene Interconversion: A Synthetically Accessible Acyclic
 Bis(silyl)silylene.
;
_journal_issue                   34
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              13536
_journal_page_last               13546
_journal_paper_doi               10.1021/jacs.9b05318
_journal_volume                  141
_journal_year                    2019
_chemical_absolute_configuration unk
_chemical_compound_source        'see text'
_chemical_formula_moiety         'C21 H56 Si6'
_chemical_formula_sum            'C21 H56 Si6'
_chemical_formula_weight         477.20
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      19
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   mixed
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.4966(3)
_cell_length_b                   13.7852(5)
_cell_length_c                   24.0165(9)
_cell_measurement_reflns_used    9694
_cell_measurement_temperature    100
_cell_measurement_theta_max      25.6872
_cell_measurement_theta_min      2.2493
_cell_volume                     3144.06(19)
_computing_cell_refinement       'SAINT (Bruker, 2014)'
_computing_data_collection       'APEX III Control Software (Bruker, 2015)'
_computing_data_reduction        'SAINT (Bruker, 2014)'
_computing_molecular_graphics    'PLATON (Spek, 2011)'
_computing_publication_material  'PLATON (Spek, 2011), enCIFer (Allen, 2014)'
_computing_structure_refinement
'SHELXL2014 (Sheldrick, 2014), SHELXLE (Huebschle, 2011)'
_computing_structure_solution    'SHELXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      100
_diffrn_detector                 ' CMOS plate '
_diffrn_detector_area_resol_mean 16
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device       ' \k-geometry diffractometer '
_diffrn_measurement_device_type  ' Bruker Photon CMOS '
_diffrn_measurement_method       ' phi- and omega-rotation '
_diffrn_radiation_monochromator  'Helios optic'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_source         'IMS microsource'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0601
_diffrn_reflns_av_unetI/netI     0.0228
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            72550
_diffrn_reflns_reduction_process
;
;
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         2.25
_exptl_absorpt_coefficient_mu    0.272
_exptl_absorpt_correction_T_max  0.7453
_exptl_absorpt_correction_T_min  0.7126
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2014/5, Bruker, 2014'
_exptl_crystal_colour            'clear colourless'
_exptl_crystal_density_diffrn    1.008
_exptl_crystal_density_method    'Not Measured'
_exptl_crystal_description       fragment
_exptl_crystal_F_000             1064
_exptl_crystal_size_max          0.384
_exptl_crystal_size_mid          0.278
_exptl_crystal_size_min          0.231
_refine_diff_density_max         0.266
_refine_diff_density_min         -0.188
_refine_diff_density_rms         0.036
_refine_ls_abs_structure_details 'Flack (1983)'
_refine_ls_abs_structure_Flack   0.06(11)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.046
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     271
_refine_ls_number_reflns         5546
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.046
_refine_ls_R_factor_all          0.0259
_refine_ls_R_factor_gt           0.0236
_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^)+(0.0328P)^2^+0.5764P] WHERE P=(FO^2^+2FC^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0572
_refine_ls_wR_factor_ref         0.0581
_reflns_number_gt                5293
_reflns_number_total             5546
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ja9b05318_si_002.cif
_cod_data_source_block           compound_1
_cod_database_code               4133682
_shelx_res_checksum              54631
_shelx_hkl_checksum              2996