High Oxidation State Rhodium and Iridium Bis(silyl)dihydride Complexes Supported by a Chelating Pyridyl-Pyrrolide Ligand
Jennifer L. McBee; Jose Escalada; T. Don Tilley; Journal of the American Chemical Society 131 (2009) 12703–12713; doi:10.1021/ja9035169

data_4104970
_publ_section_title
;
 High Oxidation State Rhodium and Iridium Bis(silyl)dihydride Complexes
 Supported by a Chelating Pyridyl-Pyrrolide Ligand
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              12703
_journal_page_last               12713
_journal_paper_doi               10.1021/ja9035169
_journal_volume                  131
_journal_year                    2009
_chemical_formula_moiety         'C50 H50 N4 Rh2 Si'
_chemical_formula_sum            'C50 H50 N4 Rh2 Si'
_chemical_formula_weight         940.85
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 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                 107.4340(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   17.0919(15)
_cell_length_b                   12.7726(11)
_cell_length_c                   20.3881(18)
_cell_measurement_reflns_used    3840
_cell_measurement_temperature    157(2)
_cell_measurement_theta_max      24.66
_cell_measurement_theta_min      2.44
_cell_volume                     4246.4(6)
_computing_cell_refinement       'Saint, Bruker 2004'
_computing_data_reduction        'Saint, Bruker 2004'
_computing_molecular_graphics    'SHELXTL-XP, Bruker 2004'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      157(2)
_diffrn_measured_fraction_theta_full 0.962
_diffrn_measured_fraction_theta_max 0.962
_diffrn_measurement_device_type  'Bruker Platinum'
_diffrn_measurement_method       \w/q-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  0.0503
_diffrn_reflns_av_sigmaI/netI    0.0564
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            10401
_diffrn_reflns_theta_full        24.71
_diffrn_reflns_theta_max         24.71
_diffrn_reflns_theta_min         2.03
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.845
_exptl_absorpt_correction_T_max  0.93
_exptl_absorpt_correction_T_min  0.85
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'sadabs, 2004'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.472
_exptl_crystal_description       plate
_exptl_crystal_F_000             1928
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.511
_refine_diff_density_min         -1.241
_refine_diff_density_rms         0.104
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.024
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     262
_refine_ls_number_reflns         3490
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.024
_refine_ls_R_factor_all          0.0549
_refine_ls_R_factor_gt           0.0391
_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^)+(0.0613P)^2^+0.2414P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0955
_refine_ls_wR_factor_ref         0.1030
_reflns_number_gt                2779
_reflns_number_total             3490
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja9035169_si_007.cif
_cod_data_source_block           jme2186m
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               4104970