Catalysis of Enantioselective [2+1]-Cycloaddition Reactions of Ethyl Diazoacetate and Terminal Acetylenes Using Mixed-Ligand Complexes of the Series Rh2(RCO2)n(L*4-n). Stereochemical Heuristics for Ligand Exchange and Catalyst Synthesis
Yan Lou; Travis P. Remarchuk; E. J. Corey; Journal of the American Chemical Society 127 (2005) 14223–14230; doi:10.1021/ja052254w

data_4111991
_publ_section_title
;
 Catalysis of Enantioselective [2+1]-Cycloaddition Reactions of Ethyl
 Diazoacetate and Terminal Acetylenes Using Mixed-Ligand Complexes of the
 Series Rh2(RCO2)n(L*4-n). Stereochemical Heuristics for Ligand Exchange
 and Catalyst Synthesis
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              14223
_journal_page_last               14230
_journal_paper_doi               10.1021/ja052254w
_journal_volume                  127
_journal_year                    2005
_chemical_formula_sum            'C74 H72 F12 N8 O16 Rh2 S4'
_chemical_formula_weight         1891.46
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 91.568(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   14.2337(14)
_cell_length_b                   13.8210(15)
_cell_length_c                   20.4729(18)
_cell_measurement_temperature    213(2)
_cell_volume                     4026.0(7)
_computing_cell_refinement       'SMART (BRUKER, V5.625, 2001)'
_computing_data_collection       'ASTRO (BRUKER, V5.007, 1997)'
_computing_data_reduction        'SAINT (BRUKER, V6.22, 2001)'
_computing_molecular_graphics    'SHELXTL (BRUKER, 2000, V6.1)'
_computing_publication_material  'XCIF (Sheldrick and BRUKER, 1997, V5.1)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      213(2)
_diffrn_detector_area_resol_mean 836.6
_diffrn_measured_fraction_theta_full 0.875
_diffrn_measured_fraction_theta_max 0.875
_diffrn_measurement_device_type  'Bruker CCD'
_diffrn_measurement_method       '\w, 0.3 deg'
_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  0.0554
_diffrn_reflns_av_sigmaI/netI    0.1706
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            13186
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.77
_diffrn_standards_decay_%        <1
_diffrn_standards_interval_count 0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.611
_exptl_absorpt_correction_T_max  0.9760
_exptl_absorpt_correction_T_min  0.9643
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    1.560
_exptl_crystal_density_meas      0
_exptl_crystal_description       chip
_exptl_crystal_F_000             1924
_exptl_crystal_size_max          0.06
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.882
_refine_diff_density_min         -0.931
_refine_diff_density_rms         0.102
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.00(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.954
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1050
_refine_ls_number_reflns         10112
_refine_ls_number_restraints     552
_refine_ls_restrained_S_all      0.945
_refine_ls_R_factor_all          0.1105
_refine_ls_R_factor_gt           0.0741
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0161P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1065
_refine_ls_wR_factor_ref         0.1188
_reflns_number_gt                6853
_reflns_number_total             10112
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja052254wsi20050413_122809.cif
_cod_data_source_block           ejc63t
_cod_database_code               4111991