C‒H Bond Activation by Cationic Iridium(III) NHC Complexes: A Combined Experimental and Computational Study
Meredith, Joseph M.; Robinson, Robert; Goldberg, Karen I.; Kaminsky, Werner; Heinekey, D. Michael; Organometallics 31 (2012) 1879–; doi:10.1021/om2012166

data_4076448
_publ_section_title
;
 C--H Bond Activation by Cationic Iridium(III) NHC Complexes: A Combined
 Experimental and Computational Study
;
_journal_issue                   5
_journal_name_full               Organometallics
_journal_page_first              1879
_journal_paper_doi               10.1021/om2012166
_journal_volume                  31
_journal_year                    2012
_chemical_formula_moiety         'C19 H33 Ir N2'
_chemical_formula_sum            'C19 H33 Ir N2'
_chemical_formula_weight         481.67
_chemical_name_common            JMM02053
_chemical_name_systematic        JMM02053
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      19
_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                   9.0264(3)
_cell_length_b                   12.1669(5)
_cell_length_c                   16.8721(6)
_cell_measurement_reflns_used    658
_cell_measurement_temperature    130(2)
_cell_measurement_theta_max      20
_cell_measurement_theta_min      3
_cell_volume                     1852.95(12)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       KappaCCD
_computing_data_reduction        'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    'maXus, Zortep'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      130(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.945
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       '\f and \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    0.0290
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            4321
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         28.46
_diffrn_reflns_theta_min         2.94
_exptl_absorpt_coefficient_mu    7.205
_exptl_absorpt_correction_T_max  0.2211
_exptl_absorpt_correction_T_min  0.1005
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   HKL2008
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.727
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             952
_exptl_crystal_size_max          0.59
_exptl_crystal_size_mid          0.50
_exptl_crystal_size_min          0.30
_refine_diff_density_max         2.370
_refine_diff_density_min         -2.776
_refine_diff_density_rms         0.254
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.024(17)
_refine_ls_extinction_coef       0.0027(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.057
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     212
_refine_ls_number_reflns         4321
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.057
_refine_ls_R_factor_all          0.0438
_refine_ls_R_factor_gt           0.0425
_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^)+(0.0966P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1129
_refine_ls_wR_factor_ref         0.1139
_reflns_number_gt                4182
_reflns_number_total             4321
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om2012166_si_003.cif
_cod_data_source_block           MeIMe_Me2_4a
_cod_database_code               4076448