A bromo(boryloxy) silylene and its heavier analogues.
Guthardt, Robin; Jones, Cameron; Chemical communications (Cambridge, England) 60 (2024) 1583–1586; doi:10.1039/d3cc05760g

data_7132599
_publ_section_title
;
 A bromo(boryloxy) silylene and its heavier analogues.
;
_journal_issue                   12
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              1583
_journal_page_last               1586
_journal_paper_doi               10.1039/d3cc05760g
_journal_volume                  60
_journal_year                    2024
_chemical_formula_sum            'C54 H76 B3 Br N6'
_chemical_formula_weight         921.54
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2016/6
_audit_update_record
;
2023-11-23 deposited with the CCDC.	2024-01-09 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 100.62(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   13.321(3)
_cell_length_b                   20.663(4)
_cell_length_c                   19.283(4)
_cell_measurement_reflns_used    10214
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      25.99
_cell_measurement_theta_min      1.46
_cell_volume                     5217(2)
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_computing_data_collection       'Blu-Ice (McPhillips, 2002)'
_computing_data_reduction        'XDS (Kabsch, 1993)'
_computing_molecular_graphics    X-Seed
_computing_publication_material  CifTAB
_computing_structure_refinement  'SHELXL-2016/6 (Sheldrick, 2016)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'ADSC Quantum 210r'
_diffrn_radiation_type           Synchrotron
_diffrn_radiation_wavelength     0.7109
_diffrn_reflns_av_R_equivalents  0.0625
_diffrn_reflns_av_unetI/netI     0.0339
_diffrn_reflns_Laue_measured_fraction_full 0.995
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            65586
_diffrn_reflns_point_group_measured_fraction_full 0.995
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        25.248
_diffrn_reflns_theta_max         25.999
_diffrn_reflns_theta_min         1.458
_diffrn_source                   'Australian Synchrotron'
_exptl_absorpt_coefficient_mu    0.829
_exptl_absorpt_correction_T_max  'Value not reported by XDS'
_exptl_absorpt_correction_T_min  'Value not reported by XDS'
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   XDS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.173
_exptl_crystal_description       block
_exptl_crystal_F_000             1968
_exptl_crystal_size_max          0.100
_exptl_crystal_size_mid          0.080
_exptl_crystal_size_min          0.070
_refine_diff_density_max         2.125
_refine_diff_density_min         -0.994
_refine_diff_density_rms         0.110
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     593
_refine_ls_number_reflns         10214
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.059
_refine_ls_R_factor_all          0.0763
_refine_ls_R_factor_gt           0.0735
_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^)+(0.1508P)^2^+7.0816P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2287
_refine_ls_wR_factor_ref         0.2318
_reflns_Friedel_coverage         0.000
_reflns_number_gt                9411
_reflns_number_total             10214
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3cc05760g2.cif
_cod_data_source_block           Cj1637
_cod_depositor_comments
'Adding full bibliography for 7132597--7132603.cif.'
_cod_original_cell_volume        5216.7(19)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7132599
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_min   0.922
_shelx_estimated_absorpt_t_max   0.944
_shelx_res_checksum              25684
_shelx_hkl_checksum              90903