Chiral Arylaminophosphonium Barfates as a New Class of Charged Brønsted Acid for the Enantioselective Activation of Nonionic Lewis Bases
Daisuke Uraguchi; Daisuke Nakashima; Takashi Ooi; Journal of the American Chemical Society 131 (2009) 7242–7243; doi:10.1021/ja903271t

data_4104472
_publ_section_title
;
 Chiral Arylaminophosphonium Barfates as a New Class of Charged Br\/onsted
 Acid for the Enantioselective Activation of Nonionic Lewis Bases
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              7242
_journal_page_last               7243
_journal_paper_doi               10.1021/ja903271t
_journal_volume                  131
_journal_year                    2009
_chemical_formula_sum            'C66 H66 Cl N4 O4 P'
_chemical_formula_weight         1045.65
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 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                   10.383(3)
_cell_length_b                   21.787(6)
_cell_length_c                   25.368(6)
_cell_measurement_reflns_used    4676
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      23.05
_cell_measurement_theta_min      2.32
_cell_volume                     5739(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_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      153(2)
_diffrn_detector_area_resol_mean 8.366
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_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  0.0635
_diffrn_reflns_av_sigmaI/netI    0.0751
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -29
_diffrn_reflns_limit_l_max       33
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            43902
_diffrn_reflns_theta_full        28.46
_diffrn_reflns_theta_max         28.46
_diffrn_reflns_theta_min         1.61
_exptl_absorpt_coefficient_mu    0.146
_exptl_absorpt_correction_T_max  0.9855
_exptl_absorpt_correction_T_min  0.9575
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.210
_exptl_crystal_description       prism
_exptl_crystal_F_000             2216
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.534
_refine_diff_density_min         -0.352
_refine_diff_density_rms         0.056
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.01(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.023
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     697
_refine_ls_number_reflns         14399
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.023
_refine_ls_R_factor_all          0.0911
_refine_ls_R_factor_gt           0.0602
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0773P)^2^+0.3973P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1362
_refine_ls_wR_factor_ref         0.1524
_reflns_number_gt                10469
_reflns_number_total             14399
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja903271t_si_003.cif
_cod_data_source_block           2b_Cl_4EtOH_C6H6
_cod_database_code               4104472