Modelling fundamental arene-borane contacts: spontaneous formation of a dibromoborenium cation driven by interaction between a borane Lewis acid and an arene p system
Hassanatu B. Mansaray; Alexander D.R. Rowe; Nicholas Phillips; Jochen Niemeyer; Michael Kelly; David A. Addy; Joshua I. Bates; Simon Aldridge; Chem.Commun. 47 (2011) 12295–; doi:10.1039/c1cc15259a

data_7107053
_publ_section_related_literature
;
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;
_publ_section_title
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 Modelling fundamental arene-borane contacts: spontaneous formation of a
 dibromoborenium cation driven by interaction between a borane Lewis acid
 and an arene p system
;
_journal_name_full               Chem.Commun.
_journal_page_first              12295
_journal_paper_doi               10.1039/c1cc15259a
_journal_volume                  47
_journal_year                    2011
_chemical_formula_moiety         'C23 H25 B2 Br6 N1'
_chemical_formula_sum            'C23 H25 B2 Br6 N'
_chemical_formula_weight         816.50
_space_group_IT_number           52
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ab 2c'
_symmetry_space_group_name_H-M   'P c n n'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             10-09-07
_audit_creation_method           CRYSTALS_ver_14.06
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.8539(2)
_cell_length_b                   13.1384(3)
_cell_length_c                   18.3488(4)
_cell_measurement_reflns_used    3516
_cell_measurement_temperature    150
_cell_measurement_theta_max      27
_cell_measurement_theta_min      5
_cell_volume                     2857.67(10)
_computing_cell_refinement       'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 2001).'
_computing_data_reduction        'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'CAMERON (Watkin et al., 1996)'
_computing_publication_material  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_refinement  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      150
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device       Area
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.032
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            6088
_diffrn_reflns_theta_full        26.923
_diffrn_reflns_theta_max         27.473
_diffrn_reflns_theta_min         5.138
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    8.442
_exptl_absorpt_correction_T_max  0.00
_exptl_absorpt_correction_T_min  0.00
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            'pale brown'
_exptl_crystal_density_diffrn    1.898
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1560
_exptl_crystal_size_max          1.000
_exptl_crystal_size_mid          1.000
_exptl_crystal_size_min          1.000
_refine_diff_density_max         1.12
_refine_diff_density_min         -0.99
_refine_ls_extinction_coef       48(6)
_refine_ls_extinction_method     'Larson (1970), Equation 22'
_refine_ls_goodness_of_fit_ref   0.9830
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     150
_refine_ls_number_reflns         3257
_refine_ls_number_restraints     4
_refine_ls_R_factor_all          0.0578
_refine_ls_R_factor_gt           0.0356
_refine_ls_shift/su_max          0.0011193
_refine_ls_shift/su_mean         0.0000372
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
Method= Modified Sheldrick
w=1/[\s^2^(F^2^) + ( 0.02P)^2^ + 8.34P]
,where P=(max(Fo^2^,0) + 2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0740
_refine_ls_wR_factor_gt          0.0676
_refine_ls_wR_factor_ref         0.0740
_reflns_limit_h_max              15
_reflns_limit_h_min              0
_reflns_limit_k_max              17
_reflns_limit_k_min              0
_reflns_limit_l_max              23
_reflns_limit_l_min              0
_reflns_number_gt                2506
_reflns_number_total             3257
_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   2.83
_oxford_diffrn_Wilson_scale      48.52
_oxford_refine_ls_r_factor_ref   0.0578
_oxford_refine_ls_scale          0.15466(8)
_oxford_reflns_number_all        3257
_oxford_reflns_threshold_expression_ref I>-3.0\s(I)
_oxford_structure_analysis_title '9072332 029HMCT10'
_cod_data_source_file            c1cc15259a.txt
_cod_data_source_block           '[LpyBBr2][BBr4]'
_cod_original_sg_symbol_H-M      'P c n n '
_cod_original_formula_sum        'C23 H25 B2 Br6 N1'
_cod_database_code               7107053