Axial Coordination of NHC Ligands on Dirhodium(II) Complexes: Generation of a New Family of Catalysts
Alexandre F. Trindade; Pedro M. P. Gois; Luís F. Veiros; Vânia André; M. Teresa Duarte; Carlos A. M. Afonso; Stephen Cack; F. Geoffrey; N. Cloke; Journal of Organic Chemistry 73 (2008) 4076–4086; doi:10.1021/jo800087n

data_4023424
_publ_section_title
;
 Axial Coordination of NHC Ligands on Dirhodium(II) Complexes:
 Generation of a New Family of Catalysts
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              4076
_journal_page_last               4086
_journal_paper_doi               10.1021/jo800087n
_journal_volume                  73
_journal_year                    2008
_chemical_formula_moiety         C35H50N2O8Rh2
_chemical_formula_sum            'C35 H50 N2 O8 Rh2'
_chemical_formula_weight         832.59
_chemical_name_common            diRh30
_chemical_name_systematic
;
 ?
;
_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                   12.659(4)
_cell_length_b                   15.502(2)
_cell_length_c                   18.822(3)
_cell_measurement_reflns_used    16605
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      26.37
_cell_measurement_theta_min      2.84
_cell_volume                     3693.6(14)
_computing_cell_refinement       'BRUKER SMART'
_computing_data_collection       'BRUKER SMART'
_computing_data_reduction        'BRUKER SAINT'
_computing_molecular_graphics    ORTEP
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    SIR97
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.981
_diffrn_measured_fraction_theta_max 0.981
_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     0.71069
_diffrn_reflns_av_R_equivalents  0.0588
_diffrn_reflns_av_sigmaI/netI    0.0877
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            16605
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         2.84
_exptl_absorpt_coefficient_mu    0.944
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            purple
_exptl_crystal_density_diffrn    1.497
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    .
_exptl_crystal_description       needle
_exptl_crystal_F_000             1712
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.09
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.685
_refine_diff_density_min         -0.701
_refine_diff_density_rms         0.098
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.01(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.955
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     436
_refine_ls_number_reflns         7325
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.955
_refine_ls_R_factor_all          0.0591
_refine_ls_R_factor_gt           0.0422
_refine_ls_shift/su_max          0.025
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0178P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0730
_refine_ls_wR_factor_ref         0.0779
_reflns_number_gt                6049
_reflns_number_total             7325
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo800087n-File006.cif
_cod_data_source_block           diRh30
_cod_database_code               4023424