An Isolable Bis(silylene)-Stabilized Germylone and Its Reactivity.
Wang, Yuwen; Karni, Miriam; Yao, Shenglai; Apeloig, Yitzhak; Driess, Matthias; Journal of the American Chemical Society 141 (2019) 1655–1664; doi:10.1021/jacs.8b11605

data_4133605
_publ_section_title
;
 An Isolable Bis(silylene)-Stabilized Germylone and Its Reactivity.
;
_journal_issue                   4
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              1655
_journal_page_last               1664
_journal_paper_doi               10.1021/jacs.8b11605
_journal_volume                  141
_journal_year                    2019
_chemical_formula_sum            'C45 H58 Al2 Br6 Ge N4 O Si2'
_chemical_formula_weight         1333.14
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           'CrysAlisPro 1.171.38.46 (Rigaku OD, 2015)'
_cell_angle_alpha                90
_cell_angle_beta                 102.777(3)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   11.4436(3)
_cell_length_b                   22.3224(6)
_cell_length_c                   13.7102(4)
_cell_measurement_reflns_used    6100
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      71.3600
_cell_measurement_theta_min      3.2700
_cell_volume                     3415.53(17)
_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 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0974
_diffrn_reflns_av_unetI/netI     0.1134
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            23478
_diffrn_reflns_point_group_measured_fraction_full 0.964
_diffrn_reflns_point_group_measured_fraction_max 0.964
_diffrn_reflns_theta_full        67.491
_diffrn_reflns_theta_max         67.491
_diffrn_reflns_theta_min         3.305
_exptl_absorpt_coefficient_mu    5.531
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.296
_exptl_crystal_description       plate
_exptl_crystal_F_000             1320
_exptl_crystal_size_max          0.190
_exptl_crystal_size_mid          0.060
_exptl_crystal_size_min          0.040
_refine_diff_density_max         2.261
_refine_diff_density_min         -1.861
_refine_diff_density_rms         0.149
_refine_ls_abs_structure_details
;
 Classical Flack method preferred over Parsons because s.u. lower.
;
_refine_ls_abs_structure_Flack   -0.03(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.063
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     564
_refine_ls_number_reflns         11862
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.063
_refine_ls_R_factor_all          0.1200
_refine_ls_R_factor_gt           0.0993
_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^)+(0.1720P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2472
_refine_ls_wR_factor_ref         0.2788
_reflns_Friedel_coverage         0.875
_reflns_Friedel_fraction_full    0.925
_reflns_Friedel_fraction_max     0.925
_reflns_number_gt                9025
_reflns_number_total             11862
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja8b11605_si_002.cif
_cod_data_source_block           Compound-5
_cod_depositor_comments
;

2020-09-22
Z value and formula fixed to values more according to usual
chemical conventions.                 miguel
;
_cod_original_formula_weight         666.57
_cod_original_formula_units_Z            4
_cod_original_sg_symbol_H-M      'P 21'
_cod_original_formula_sum        'C22.50 H29 Al Br3 Ge0.50 N2 O0.50 Si'
_cod_database_code               4133605
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.420
_shelx_estimated_absorpt_t_max   0.809
_shelx_res_checksum              74803
_shelx_hkl_checksum              19554
_shelx_fab_checksum              5022
_platon_squeeze_void_probe_radius 1.20