Alkenylborane-Derived Frustrated Lewis Pairs: Metal-Free Catalytic Hydrogenation Reactions of Electron-Deficient Alkenes
Reddy, J. Sreedhar; Xu, Bao-Hua; Mahdi, Tayseer; Fröhlich, Roland; Kehr, Gerald; Stephan, Douglas W.; Erker, Gerhard; Organometallics 31 (2012) 5638–; doi:10.1021/om3006068

data_4078960
_publ_section_title
;
 Alkenylborane-Derived Frustrated Lewis Pairs: Metal-Free Catalytic
 Hydrogenation Reactions of Electron-Deficient Alkenes
;
_journal_issue                   15
_journal_name_full               Organometallics
_journal_page_first              5638
_journal_paper_doi               10.1021/om3006068
_journal_volume                  31
_journal_year                    2012
_chemical_formula_sum            'C35 H39 B F15 P'
_chemical_formula_weight         786.44
_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                 93.002(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.9252(3)
_cell_length_b                   20.0004(11)
_cell_length_c                   18.3802(7)
_cell_measurement_reflns_used    5972
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      68.25
_cell_measurement_theta_min      0.88
_cell_volume                     3643.6(3)
_computing_cell_refinement       'Collect (Nonius B.V., 1998)'
_computing_data_collection       'Collect (Nonius B.V., 1998)'
_computing_data_reduction        'Denzo-SMN (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'XP (Bruker AXS, 2000)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      223(2)
_diffrn_measured_fraction_theta_full 0.925
_diffrn_measured_fraction_theta_max 0.925
_diffrn_measurement_device_type  'Nonius KappaCCD APEXII'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.036
_diffrn_reflns_av_sigmaI/netI    0.0300
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            26064
_diffrn_reflns_theta_full        66.79
_diffrn_reflns_theta_max         66.79
_diffrn_reflns_theta_min         4.82
_exptl_absorpt_coefficient_mu    1.599
_exptl_absorpt_correction_T_max  0.7728
_exptl_absorpt_correction_T_min  0.6455
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'Denzo (Otwinowski, Borek, Majewski & Minor, 2003)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.434
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1616
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.17
_refine_diff_density_max         0.764
_refine_diff_density_min         -0.339
_refine_diff_density_rms         0.069
_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     490
_refine_ls_number_reflns         5981
_refine_ls_number_restraints     69
_refine_ls_restrained_S_all      1.067
_refine_ls_R_factor_all          0.1015
_refine_ls_R_factor_gt           0.0889
_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^)+(0.1469P)^2^+4.1904P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2526
_refine_ls_wR_factor_ref         0.2672
_reflns_number_gt                4875
_reflns_number_total             5981
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om3006068_si_003.cif
_cod_data_source_block           erk5966
_cod_original_sg_symbol_H-M      P21/n
_cod_database_code               4078960