Probing substituent effects on the activation of H(2) by phosphorus and boron frustrated Lewis pairs.
Neu, Rebecca C.; Ouyang, Eva Y.; Geier, Stephen J.; Zhao, Xiaoxi; Ramos, Alberto; Stephan, Douglas W.; Dalton transactions (Cambridge, England : 2003) 39 (2010) 4285–4294; doi:10.1039/c001133a

data_7025471
_publ_section_title
;
 Probing substituent effects on the activation of H(2) by phosphorus and
 boron frustrated Lewis pairs.
;
_journal_issue                   18
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              4285
_journal_page_last               4294
_journal_paper_doi               10.1039/c001133a
_journal_volume                  39
_journal_year                    2010
_chemical_formula_sum            'C21 H12 B F9 O3'
_chemical_formula_weight         494.12
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 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                 94.773(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   13.8692(7)
_cell_length_b                   13.4263(6)
_cell_length_c                   22.0941(11)
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      25.0
_cell_measurement_theta_min      2.0
_cell_volume                     4099.9(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_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  0.0373
_diffrn_reflns_av_sigmaI/netI    0.0278
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            28124
_diffrn_reflns_theta_full        25.42
_diffrn_reflns_theta_max         25.42
_diffrn_reflns_theta_min         1.85
_exptl_absorpt_coefficient_mu    0.159
_exptl_absorpt_correction_T_max  0.7452
_exptl_absorpt_correction_T_min  0.6939
_exptl_absorpt_correction_type   empirical
_exptl_crystal_density_diffrn    1.601
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1984
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.19
_refine_diff_density_max         0.278
_refine_diff_density_min         -0.285
_refine_diff_density_rms         0.047
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.998
_refine_ls_hydrogen_treatment    fixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     334
_refine_ls_number_reflns         3789
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.998
_refine_ls_R_factor_all          0.0767
_refine_ls_R_factor_gt           0.0442
_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^)+(0.0593P)^2^+4.6631P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1065
_refine_ls_wR_factor_ref         0.1271
_reflns_number_gt                2551
_reflns_number_total             3789
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c001133a.txt
_cod_data_source_block           B(OC6H4CF3)3
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7025471