An N,N'-Diamidocarbene: Studies in C-H Insertion, Reversible Carbonylation, and Transition-Metal Coordination Chemistry
Todd W. Hudnall; Christopher W. Bielawski; Journal of the American Chemical Society 131 (2009) 16039–16041; doi:10.1021/ja907481w

data_4105334
_publ_section_title
;
 An N,N'-Diamidocarbene: Studies in C-H Insertion, Reversible
 Carbonylation, and Transition-Metal Coordination Chemistry
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              16039
_journal_page_last               16041
_journal_paper_doi               10.1021/ja907481w
_journal_volume                  131
_journal_year                    2009
_chemical_formula_moiety         N,N-(Dipp)-2,4-Oxo-3,3-(Me2)-1-Ir(COD)Cl
_chemical_formula_sum            'C38 H52 Cl Ir N2 O2'
_chemical_formula_weight         796.47
_chemical_name_common            6-KetoDipp-Ir(COD)Cl
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           62
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_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                   16.468(3)
_cell_length_b                   19.084(4)
_cell_length_c                   11.224(2)
_cell_measurement_temperature    150(2)
_cell_volume                     3527.4(12)
_computing_cell_refinement       'Collect software, Nonius B.V. 1998'
_computing_data_collection       'Collect software, Nonius B.V. 1998'
_computing_data_reduction
'DENZO and Scalepack (Otwinoski and Minor, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'omega 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  0.0171
_diffrn_reflns_av_sigmaI/netI    0.0276
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            7760
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         2.13
_exptl_absorpt_coefficient_mu    3.895
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details   none
_exptl_crystal_colour            red-orange
_exptl_crystal_density_diffrn    1.500
_exptl_crystal_description       block
_exptl_crystal_F_000             1616
_exptl_crystal_size_max          .180
_exptl_crystal_size_mid          .110
_exptl_crystal_size_min          .090
_refine_diff_density_max         1.185
_refine_diff_density_min         -1.702
_refine_diff_density_rms         0.470
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.005
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     208
_refine_ls_number_reflns         4170
_refine_ls_number_restraints     12
_refine_ls_restrained_S_all      1.014
_refine_ls_R_factor_all          0.0438
_refine_ls_R_factor_gt           0.0257
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0603P)^2^+11.7775P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0714
_refine_ls_wR_factor_ref         0.1083
_reflns_number_gt                3213
_reflns_number_total             4170
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja907481w_si_002_4.cif
_cod_data_source_block           1-[Ir(COD)Cl]
_cod_database_code               4105334