Reduction of C,N-chelated chloroborane: straightforward formation of the unprecedented 1H-2,1-benzazaborolyl potassium salt.
Hejda, Martin; Jambor, Roman; R°užička, Aleš; Lyčka, Antonín; Dostál, Libor; Dalton transactions (Cambridge, England : 2003) 43 (2014) 9012–9015; doi:10.1039/c4dt00812j

data_7031222
_publ_section_title
;
 Reduction of C,N-chelated chloroborane: straightforward formation of the
 unprecedented 1H-2,1-benzazaborolyl potassium salt.
;
_journal_issue                   24
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              9012
_journal_page_last               9015
_journal_paper_doi               10.1039/c4dt00812j
_journal_volume                  43
_journal_year                    2014
_chemical_formula_moiety         'C34 H38 B2 N2'
_chemical_formula_sum            'C34 H38 B2 N2'
_chemical_formula_weight         496.28
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                106.546(5)
_cell_angle_beta                 95.863(5)
_cell_angle_gamma                95.354(6)
_cell_formula_units_Z            2
_cell_length_a                   8.1810(5)
_cell_length_b                   11.8551(7)
_cell_length_c                   15.3890(9)
_cell_measurement_reflns_used    28508
_cell_measurement_temperature    150(1)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      1
_cell_volume                     1411.47(15)
_computing_cell_refinement       'COLLECT and DENZO'
_computing_data_collection
'COLLECT (Hooft, 1998) and DENZO (Otwinowski & Minor, 1997)'
_computing_data_reduction        'COLLECT and DENZO'
_computing_molecular_graphics    'PLATON (Spek, 2003)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      150(1)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker Nonius KappaCCD area detector'
_diffrn_measurement_method       '\f and \w scans to fill the Ewald sphere'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0480
_diffrn_reflns_av_sigmaI/netI    0.0375
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            28469
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.84
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.066
_exptl_absorpt_correction_T_max  0.994
_exptl_absorpt_correction_T_min  0.985
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details
;
Gaussian integration (Coppens, 1970)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.168
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             532
_exptl_crystal_size_max          0.39
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.312
_refine_diff_density_min         -0.320
_refine_diff_density_rms         0.063
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.130
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     343
_refine_ls_number_reflns         6450
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.130
_refine_ls_R_factor_all          0.0761
_refine_ls_R_factor_gt           0.0502
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0325P)^2^+0.7710P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1009
_refine_ls_wR_factor_ref         0.1165
_reflns_number_gt                4973
_reflns_number_total             6450
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4dt00812j2.cif
_cod_data_source_block           shelxl
_cod_database_code               7031222