Synthesis and Structure of PNP-Supported Iridium Silyl and Silylene Complexes: Catalytic Hydrosilation of Alkenes
Elisa Calimano; T. Don Tilley; Journal of the American Chemical Society 131 (2009) 11161–11173; doi:10.1021/ja903737j

data_4104823
_publ_section_title
;
 Synthesis and Structure of PNP-Supported Iridium Silyl and Silylene
 Complexes: Catalytic Hydrosilation of Alkenes
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              11161
_journal_page_last               11173
_journal_paper_doi               10.1021/ja903737j
_journal_volume                  131
_journal_year                    2009
_chemical_formula_moiety         'C34 H54 Ir N P2'
_chemical_formula_sum            'C34 H54 Ir N P2'
_chemical_formula_weight         730.92
_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                 94.913(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.404(2)
_cell_length_b                   16.248(3)
_cell_length_c                   21.850(5)
_cell_measurement_reflns_used    19124
_cell_measurement_temperature    152(2)
_cell_measurement_theta_max      36.890
_cell_measurement_theta_min      4.502
_cell_volume                     3326.3(12)
_computing_cell_refinement       'Bruker SAINT v7.07'
_computing_data_collection       'Bruker SMART v5.631'
_computing_data_reduction        'Bruker SAINT v7.07'
_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      152(2)
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device_type  'Bruker APEX'
_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  0.0713
_diffrn_reflns_av_sigmaI/netI    0.1042
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            18750
_diffrn_reflns_theta_full        26.40
_diffrn_reflns_theta_max         26.40
_diffrn_reflns_theta_min         1.56
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    4.132
_exptl_absorpt_correction_T_max  0.9219
_exptl_absorpt_correction_T_min  0.751
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Blessing, 1995'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.460
_exptl_crystal_description       block
_exptl_crystal_F_000             1488
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.02
_refine_diff_density_max         2.258
_refine_diff_density_min         -1.637
_refine_diff_density_rms         0.168
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.022
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     343
_refine_ls_number_reflns         6749
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.022
_refine_ls_R_factor_all          0.0898
_refine_ls_R_factor_gt           0.0504
_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^)+(0.0323P)^2^+1.4539P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0971
_refine_ls_wR_factor_ref         0.1080
_reflns_number_gt                4580
_reflns_number_total             6749
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja903737j_si_003.cif
_cod_data_source_block           ec15as
_cod_database_code               4104823