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_7005591
_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            'C36 H44 B2 O'
_chemical_formula_weight         514.37
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_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                 93.164(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.9762(13)
_cell_length_b                   8.5219(12)
_cell_length_c                   40.736(6)
_cell_measurement_temperature    297(2)
_cell_volume                     3111.3(8)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      297(2)
_diffrn_measured_fraction_theta_full 0.946
_diffrn_measured_fraction_theta_max 0.946
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0620
_diffrn_reflns_av_sigmaI/netI    0.1079
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       48
_diffrn_reflns_limit_l_min       -53
_diffrn_reflns_number            21312
_diffrn_reflns_theta_full        28.30
_diffrn_reflns_theta_max         28.30
_diffrn_reflns_theta_min         2.00
_exptl_absorpt_coefficient_mu    0.063
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.680
_exptl_absorpt_correction_type   SADABS
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.098
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1112
_exptl_crystal_size_max          0.1
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.3
_refine_diff_density_max         0.300
_refine_diff_density_min         -0.248
_refine_diff_density_rms         0.059
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     352
_refine_ls_number_reflns         7319
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.054
_refine_ls_R_factor_all          0.2035
_refine_ls_R_factor_gt           0.0986
_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^)+(0.1800P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.3214
_refine_ls_wR_factor_ref         0.3560
_reflns_number_gt                2878
_reflns_number_total             7319
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b703366d.txt
_cod_data_source_block           bob
_cod_depositor_comments
;

2018-01-21
Z value and formula fixed to values more according to usual
chemical conventions.                 miguel
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_original_formula_sum        'C24 H29.33 B1.33 O0.67'
_cod_original_formula_units_Z    6
_cod_original_formula_weight     342.89
_cod_database_code               7005591