Diboration of Alkenes and Alkynes with a Carborane-Fused Four-Membered Boracycle Bearing an Electron-Precise B-B Bond
Zhong, Minling; Zhang, Jie; Lu, Zhenpin; Xie, Zuowei; Dalton Transactions  (2021) –; doi:10.1039/D1DT03665C

data_7708787
_publ_section_title
;
 Diboration of Alkenes and Alkynes with a Carborane-Fused Four-Membered
 Boracycle Bearing an Electron-Precise B-B Bond
;
_journal_name_full               'Dalton Transactions'
_journal_paper_doi               10.1039/D1DT03665C
_journal_year                    2021
_chemical_formula_sum            'C18 H46 B12 Br2 Si4'
_chemical_formula_weight         664.45
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2021-11-09 deposited with the CCDC.	2021-11-10 downloaded from the CCDC.
;
_cell_angle_alpha                75.7550(10)
_cell_angle_beta                 85.9640(10)
_cell_angle_gamma                87.7300(10)
_cell_formula_units_Z            2
_cell_length_a                   9.2458(3)
_cell_length_b                   13.6832(5)
_cell_length_c                   14.5973(5)
_cell_measurement_reflns_used    429
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      15
_cell_measurement_theta_min      15
_cell_volume                     1785.04(11)
_computing_cell_refinement       'BRUKER D8VENTURE DIFFRACTOMETER'
_computing_data_collection       'BRUKER D8VENTURE DIFFRACTOMETER'
_computing_data_reduction        'BRUKER D8VENTURE DIFFRACTOMETER'
_computing_molecular_graphics    'BRUKER SHELXTL'
_computing_publication_material  'BRUKER SHELXTL'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.978
_diffrn_measured_fraction_theta_max 0.975
_diffrn_measurement_device_type  'BRUKER D8VENTURE DIFFRACTOMETER'
_diffrn_measurement_method       'PHI & OMEGA SCAN'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0495
_diffrn_reflns_av_unetI/netI     0.0367
_diffrn_reflns_Laue_measured_fraction_full 0.978
_diffrn_reflns_Laue_measured_fraction_max 0.975
_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       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            36123
_diffrn_reflns_point_group_measured_fraction_full 0.978
_diffrn_reflns_point_group_measured_fraction_max 0.975
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         68.420
_diffrn_reflns_theta_min         3.333
_exptl_absorpt_coefficient_mu    4.216
_exptl_absorpt_correction_T_max  0.7531
_exptl_absorpt_correction_T_min  0.2087
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
 SADABS 2016/2: Krause, L., Herbst-Irmer, R., Sheldrick G.M. & Stalke D.,
 J. Appl. Cryst. 48 (2015) 3-10
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.236
_exptl_crystal_description       block
_exptl_crystal_F_000             680
_exptl_crystal_size_max          0.500
_exptl_crystal_size_mid          0.400
_exptl_crystal_size_min          0.300
_refine_diff_density_max         0.816
_refine_diff_density_min         -0.807
_refine_diff_density_rms         0.089
_refine_ls_extinction_coef       0.0197(13)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2018/3 (Sheldrick 2018)'
_refine_ls_goodness_of_fit_ref   1.090
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     350
_refine_ls_number_reflns         6401
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.101
_refine_ls_R_factor_all          0.0532
_refine_ls_R_factor_gt           0.0528
_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^)+(0.0889P)^2^+0.7885P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1429
_refine_ls_wR_factor_ref         0.1435
_reflns_Friedel_coverage         0.000
_reflns_number_gt                6281
_reflns_number_total             6401
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d1dt03665c2.cif
_cod_data_source_block           6
_cod_database_code               7708787
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.227
_shelx_estimated_absorpt_t_max   0.364
_shelx_res_checksum              33069
_shelx_hkl_checksum              15736