Three-coordinate organoboron with a B=N bond: substituent effects, luminescence/electroluminescence and reactions with fluoride.
Cui, Yi; Li, Fenghong; Lu, Zheng-Hong; Wang, Suning; Dalton transactions (Cambridge, England : 2003)  (2007) 2634–2643; doi:10.1039/b703366d

data_7005593
_publ_section_title
;
 Three-coordinate organoboron with a B=N bond: substituent effects,
 luminescence/electroluminescence and reactions with fluoride.
;
_journal_issue                   25
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              2634
_journal_page_last               2643
_journal_paper_doi               10.1039/b703366d
_journal_year                    2007
_chemical_formula_sum            'C27 H30 B N'
_chemical_formula_weight         379.33
_chemical_name_common            2
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   22.3981(18)
_cell_length_b                   8.1607(7)
_cell_length_c                   12.2170(10)
_cell_measurement_temperature    298(2)
_cell_volume                     2233.1(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.964
_diffrn_measured_fraction_theta_max 0.964
_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  0.0275
_diffrn_reflns_av_sigmaI/netI    0.0414
_diffrn_reflns_limit_h_max       28
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            14894
_diffrn_reflns_theta_full        28.25
_diffrn_reflns_theta_max         28.25
_diffrn_reflns_theta_min         1.82
_exptl_absorpt_coefficient_mu    0.064
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.810
_exptl_absorpt_correction_type   SADABS
_exptl_crystal_density_diffrn    1.128
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             816
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.119
_refine_diff_density_min         -0.116
_refine_diff_density_rms         0.024
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   'Cannot be reliably determined'
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.900
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     281
_refine_ls_number_reflns         5067
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.900
_refine_ls_R_factor_all          0.0686
_refine_ls_R_factor_gt           0.0384
_refine_ls_shift/su_max          0.050
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0430P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0795
_refine_ls_wR_factor_ref         0.0868
_reflns_number_gt                3234
_reflns_number_total             5067
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b703366d.txt
_cod_data_source_block           cy611a
_cod_original_sg_symbol_H-M      Pna2(1)
_cod_database_code               7005593