Hemilabile N-Xylyl-N'-methylperimidine Carbene Iridium Complexes as Catalysts for C-H Activation and Dehydrogenative Silylation: Dual Role of N-Xylyl Moiety for ortho-C-H Bond Activation and Reductive Bond Cleavage
Gyeongshin Choi; Hayato Tsurugi; Kazushi Mashima; Journal of the American Chemical Society 135 (2013) 13149–13161; doi:10.1021/ja406519u

data_4120725
_publ_section_title
;
 Hemilabile N-Xylyl-N'-methylperimidine Carbene Iridium Complexes as
 Catalysts for C-H Activation and Dehydrogenative Silylation: Dual Role of
 N-Xylyl Moiety for ortho-C-H Bond Activation and Reductive Bond Cleavage
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              13149
_journal_page_last               13161
_journal_paper_doi               10.1021/ja406519u
_journal_volume                  135
_journal_year                    2013
_chemical_formula_moiety         'C31 H35 Ir N2 O3'
_chemical_formula_sum            'C31 H35 Ir N2 O3'
_chemical_formula_weight         675.81
_chemical_name_common            1h
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                69.912(12)
_cell_angle_beta                 71.057(12)
_cell_angle_gamma                82.847(16)
_cell_formula_units_Z            4
_cell_length_a                   12.440(5)
_cell_length_b                   13.311(5)
_cell_length_c                   18.205(6)
_cell_measurement_reflns_used    6382
_cell_measurement_temperature    113(2)
_cell_measurement_theta_max      27.49
_cell_measurement_theta_min      3.09
_cell_volume                     2677.5(17)
_computing_cell_refinement       CrystalClear
_computing_data_collection       'CrystalClear (Rigaku Inc., 2007)'
_computing_data_reduction        CrystalClear
_computing_molecular_graphics    'CrystalStructure 4.0'
_computing_publication_material  'CrystalStructure 4.0 (Rigaku, 2010)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      113(2)
_diffrn_detector_area_resol_mean 7.314
_diffrn_measured_fraction_theta_full 0.964
_diffrn_measured_fraction_theta_max 0.964
_diffrn_measurement_device_type  'Rigaku Mercury70'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0445
_diffrn_reflns_av_sigmaI/netI    0.0647
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            25692
_diffrn_reflns_theta_full        27.56
_diffrn_reflns_theta_max         27.56
_diffrn_reflns_theta_min         3.09
_exptl_absorpt_coefficient_mu    5.022
_exptl_absorpt_correction_T_max  0.448
_exptl_absorpt_correction_T_min  0.312
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'REQAB (Rigaku, 1998)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.676
_exptl_crystal_description       block
_exptl_crystal_F_000             1344
_exptl_crystal_size_max          0.39
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.16
_refine_diff_density_max         4.208
_refine_diff_density_min         -2.393
_refine_diff_density_rms         0.191
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.175
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     675
_refine_ls_number_reflns         11920
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.175
_refine_ls_R_factor_all          0.0656
_refine_ls_R_factor_gt           0.0570
_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^)+(0.0400P)^2^+12.2369P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1239
_refine_ls_wR_factor_ref         0.1319
_reflns_number_gt                10437
_reflns_number_total             12369
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja406519u_si_001_05.cif
_cod_data_source_block           1h
_cod_database_code               4120725