Multiple Si‒H Bond Activations in a Bis(diethylphosphino)methane-Bridged Complex of Rhodium and Iridium: Synthesis of an Unusual Bis(silyl)/μ-Silylene Complex
Mobarok, Md Hosnay; Ferguson, Michael J.; Cowie, Martin; Organometallics 31 (2012) 4722–; doi:10.1021/om300283k

data_4078669
_publ_section_title
;
 Multiple Si--H Bond Activations in a Bis(diethylphosphino)methane-Bridged
 Complex of Rhodium and Iridium: Synthesis of an Unusual
 Bis(silyl)/\m-Silylene Complex
;
_journal_issue                   13
_journal_name_full               Organometallics
_journal_page_first              4722
_journal_paper_doi               10.1021/om300283k
_journal_volume                  31
_journal_year                    2012
_chemical_formula_moiety         'C32 H56 Ir O2 P4 Rh Si'
_chemical_formula_sum            'C32 H56 Ir O2 P4 Rh Si'
_chemical_formula_weight         919.85
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 93.7340(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.0265(4)
_cell_length_b                   15.2613(7)
_cell_length_c                   24.6102(11)
_cell_measurement_reflns_used    9995
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      26.40
_cell_measurement_theta_min      2.53
_cell_volume                     3757.8(3)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\w 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  0.0291
_diffrn_reflns_av_sigmaI/netI    0.0224
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            30044
_diffrn_reflns_theta_full        26.46
_diffrn_reflns_theta_max         26.46
_diffrn_reflns_theta_min         1.66
_exptl_absorpt_coefficient_mu    4.205
_exptl_absorpt_correction_T_max  0.6983
_exptl_absorpt_correction_T_min  0.3223
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2008)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.626
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1840
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.09
_refine_diff_density_max         1.508
_refine_diff_density_min         -1.023
_refine_diff_density_rms         0.086
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.026
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     370
_refine_ls_number_reflns         7746
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.026
_refine_ls_R_factor_all          0.0363
_refine_ls_R_factor_gt           0.0262
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0244P)^2^+5.7333P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0570
_refine_ls_wR_factor_ref         0.0617
_reflns_number_gt                6424
_reflns_number_total             7746
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            om300283k_si_002.cif
_cod_data_source_block           cow1141
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               4078669