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_4133604
_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            'C49 H68 Al Br3 Ge N4 O2 Si2'
_chemical_formula_weight         1140.55
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_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_atom_sites_solution_hydrogens   geom
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_cell_length_c                   31.6007(19)
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_diffrn_ambient_temperature      150(2)
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_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
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_diffrn_reflns_av_R_equivalents  0.1672
_diffrn_reflns_av_unetI/netI     0.0873
_diffrn_reflns_Laue_measured_fraction_full 1.000
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_diffrn_reflns_limit_h_min       -18
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_diffrn_reflns_point_group_measured_fraction_full 1.000
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_diffrn_reflns_theta_full        67.482
_diffrn_reflns_theta_max         67.482
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_exptl_absorpt_coefficient_mu    4.236
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.38692
_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    1.395
_exptl_crystal_description       plate
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_exptl_crystal_size_max          0.210
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_exptl_crystal_size_min          0.040
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_refine_ls_extinction_method     none
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_refine_ls_number_parameters     575
_refine_ls_number_reflns         9776
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.034
_refine_ls_R_factor_all          0.1140
_refine_ls_R_factor_gt           0.0672
_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^)+(0.0886P)^2^+2.8467P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
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_reflns_number_total             9776
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja8b11605_si_002.cif
_cod_data_source_block           Compound-4
_cod_database_code               4133604
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.470
_shelx_estimated_absorpt_t_max   0.849
_shelx_res_checksum              68876
_shelx_hkl_checksum              20974