P-Chiral Tetraphosphine Dirhodium Complex as a Catalyst for Asymmetric Hydrogenation: Synthesis, Structure, Enantioselectivity, and Mechanism. Stereoselective Formation of a Dirhodium Tetrahydride Complex and Its Reaction with Methyl (Z)-α-Acetamidocinnamate
Imamoto, Tsuneo; Yashio, Keiji; Crépy, Karen V. L.; Katagiri, Kosuke; Takahashi, Hidetoshi; Kouchi, Mitsuhiro; Gridnev, Ilya D.; Organometallics 25 (2006) 908–; doi:10.1021/om050759p

data_4074667
_publ_section_title
;
 P-Chiral Tetraphosphine Dirhodium Complex as a Catalyst for Asymmetric
 Hydrogenation:&#x00A0; Synthesis, Structure, Enantioselectivity, and
 Mechanism. Stereoselective Formation of a Dirhodium Tetrahydride Complex
 and Its Reaction with Methyl (Z)-\a-Acetamidocinnamate
;
_journal_issue                   4
_journal_name_full               Organometallics
_journal_page_first              908
_journal_paper_doi               10.1021/om050759p
_journal_volume                  25
_journal_year                    2006
_chemical_formula_sum            'C38 H70 F12 P6 Rh2'
_chemical_formula_weight         1146.61
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      19
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.616(1)
_cell_length_b                   16.946(2)
_cell_length_c                   23.175(2)
_cell_measurement_temperature    150.2
_cell_volume                     4954.6(8)
_computing_data_reduction        'teXsan Ver. 1.11'
_computing_publication_material  'teXsan Ver. 1.11'
_computing_structure_refinement  'teXsan Ver. 1.10'
_computing_structure_solution    SIR97
_diffrn_measured_fraction_theta_full 0.9960
_diffrn_measured_fraction_theta_max 0.9960
_diffrn_measurement_device_type  'BURKER Smart1000'
_diffrn_measurement_method       \w
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.7107
_diffrn_reflns_av_R_equivalents  0.058
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            29878
_diffrn_reflns_theta_full        27.59
_diffrn_reflns_theta_max         27.59
_exptl_absorpt_coefficient_mu    0.930
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.537
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       cubic
_exptl_crystal_size_max          0.300
_exptl_crystal_size_mid          0.200
_exptl_crystal_size_min          0.200
_refine_diff_density_max         3.01
_refine_diff_density_min         -0.96
_refine_ls_abs_structure_Flack   0.00(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.566
_refine_ls_hydrogen_treatment    noref
_refine_ls_number_parameters     525
_refine_ls_number_reflns         4061
_refine_ls_R_factor_gt           0.0716
_refine_ls_shift/su_max          4.7191
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details     'w = 1/[\s^2^(Fo) + 0.00063|Fo|^2^]'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.0961
_reflns_number_gt                3672
_reflns_number_total             6303
_reflns_threshold_expression     F^2^>2.0\s(F^2^)
_cod_data_source_file            om050759psi20050902_022150.cif
_cod_data_source_block           Rh2-tetraphosphine
_cod_original_cell_volume        4954.7(9)
_cod_original_sg_symbol_H-M      'P 21 21 21   '
_cod_original_formula_sum        'C38 H70 F12 P6 Rh2 '
_cod_database_code               4074667