Isolable diboryl radicals acting as highly efficient reaction intermediates under mild conditions
Feng, Rui; Yang, Wenbang; Wang, Wenqing; Zhao, Yue; Tan, Gengwen; Zhang, Li; Wang, Xinping; Chemical Communications  (2019) –; doi:10.1039/C9CC06514H

data_7124197
_publ_section_title
;
 Isolable diboryl radicals acting as highly efficient reaction
 intermediates under mild conditions
;
_journal_name_full               'Chemical Communications'
_journal_paper_doi               10.1039/C9CC06514H
_journal_year                    2019
_chemical_formula_sum            'C23 H26 B N'
_chemical_formula_weight         327.26
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2019-05-01 deposited with the CCDC.    2019-09-18 downloaded from the CCDC.
;
_cell_angle_alpha                108.839(3)
_cell_angle_beta                 109.210(3)
_cell_angle_gamma                101.912(3)
_cell_formula_units_Z            2
_cell_length_a                   8.4562(7)
_cell_length_b                   11.3431(9)
_cell_length_c                   11.8941(10)
_cell_measurement_reflns_used    7380
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      53.96
_cell_measurement_theta_min      3.78
_cell_volume                     955.21(14)
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      193(2)
_diffrn_measured_fraction_theta_full 0.986
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device_type  'Bruker D8 Venture'
_diffrn_radiation_type           GaK\a
_diffrn_radiation_wavelength     1.34139
_diffrn_reflns_av_R_equivalents  0.0522
_diffrn_reflns_av_unetI/netI     0.0455
_diffrn_reflns_Laue_measured_fraction_full 0.986
_diffrn_reflns_Laue_measured_fraction_max 0.984
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            12455
_diffrn_reflns_point_group_measured_fraction_full 0.986
_diffrn_reflns_point_group_measured_fraction_max 0.984
_diffrn_reflns_theta_full        53.594
_diffrn_reflns_theta_max         53.967
_diffrn_reflns_theta_min         3.778
_exptl_absorpt_coefficient_mu    0.307
_exptl_absorpt_correction_T_max  0.7131
_exptl_absorpt_correction_T_min  0.6227
_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    1.138
_exptl_crystal_description       block
_exptl_crystal_F_000             352
_exptl_crystal_size_max          0.190
_exptl_crystal_size_mid          0.160
_exptl_crystal_size_min          0.140
_refine_diff_density_max         0.224
_refine_diff_density_min         -0.169
_refine_diff_density_rms         0.036
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.050
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     232
_refine_ls_number_reflns         3465
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.050
_refine_ls_R_factor_all          0.0628
_refine_ls_R_factor_gt           0.0508
_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^)+(0.0816P)^2^+0.2367P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1459
_refine_ls_wR_factor_ref         0.1567
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2794
_reflns_number_total             3465
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9cc06514h2.cif
_cod_data_source_block           1
_cod_database_code               7124197
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.944
_shelx_estimated_absorpt_t_max   0.958
_shelx_res_checksum              58634