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_4111988
_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            'C40 H36 F6 N6 O10 Rh2 S2'
_chemical_formula_weight         1144.69
_chemical_name_systematic
; 
 ? 
;
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_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                 98.614(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   11.5271(19)
_cell_length_b                   16.631(3)
_cell_length_c                   12.189(2)
_cell_measurement_temperature    193(2)
_cell_volume                     2310.4(7)
_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      193(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_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  0.0334
_diffrn_reflns_av_sigmaI/netI    0.0690
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -22
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_diffrn_reflns_limit_l_min       -15
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_diffrn_reflns_theta_full        28.29
_diffrn_reflns_theta_max         28.29
_diffrn_reflns_theta_min         1.69
_exptl_absorpt_coefficient_mu    0.890
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            purple
_exptl_crystal_density_diffrn    1.645
_exptl_crystal_density_meas      0
_exptl_crystal_description       cube
_exptl_crystal_F_000             1148
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.02
_refine_diff_density_max         1.044
_refine_diff_density_min         -0.386
_refine_diff_density_rms         0.078
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.015(18)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.912
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     599
_refine_ls_number_reflns         10530
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.912
_refine_ls_R_factor_all          0.0457
_refine_ls_R_factor_gt           0.0386
_refine_ls_shift/su_max          0.085
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0214P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0659
_refine_ls_wR_factor_ref         0.0682
_reflns_number_gt                9317
_reflns_number_total             10530
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja052254wsi20050407_035727.cif
_cod_data_source_block           rak2t
_cod_original_cell_volume        2310.4(6)
_cod_database_code               4111988