Facile N-H Bond Cleavage of Ammonia by an Iridium Complex Bearing a Noninnocent PNP-Pincer Type Phosphaalkene Ligand
Yung-Hung Chang; Yumiko Nakajima; Hiromasa Tanaka; Kazunari Yoshizawa; Fumiyuki Ozawa; Journal of the American Chemical Society 135 (2013) 11791–11794; doi:10.1021/ja407163z

data_4120308
_publ_contact_author_address
'Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan'
_publ_contact_author_email       ozawa@scl.kyoto-u.ac.jp
_publ_contact_author_fax         +81-774-38-3039
_publ_contact_author_name        'Fumiyuki Ozawa'
_publ_contact_author_phone       +81-774-38-3035
_publ_section_title
;
 Facile N-H Bond Cleavage of Ammonia by an Iridium Complex Bearing a
 Noninnocent PNP-Pincer Type Phosphaalkene Ligand
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              11791
_journal_page_last               11794
_journal_paper_doi               10.1021/ja407163z
_journal_volume                  135
_journal_year                    2013
_chemical_formula_sum            'C49 H77 Ir N2 P2'
_chemical_formula_weight         948.27
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 104.5114(15)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   16.5666(17)
_cell_length_b                   11.0560(11)
_cell_length_c                   26.027(3)
_cell_measurement_temperature    93(2)
_cell_volume                     4615.0(8)
_computing_cell_refinement       'Rigaku VariMax Saturn CCD'
_computing_data_collection       'Rigaku VariMax Saturn CCD'
_computing_data_reduction        'Rigaku VariMax Saturn CCD'
_computing_molecular_graphics    'ORTEP3 for windows'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      93(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  ' CCD area detector '
_diffrn_measurement_method       ' phi and omega scans'
_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  0.0257
_diffrn_reflns_av_sigmaI/netI    0.0242
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            36294
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.01
_exptl_absorpt_coefficient_mu    2.996
_exptl_absorpt_correction_T_max  0.9155
_exptl_absorpt_correction_T_min  0.6457
_exptl_absorpt_correction_type   numerical
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    1.365
_exptl_crystal_description       block
_exptl_crystal_F_000             1968
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.09
_exptl_crystal_size_min          0.03
_refine_diff_density_max         6.065
_refine_diff_density_min         -2.475
_refine_diff_density_rms         0.127
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.034
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     509
_refine_ls_number_reflns         10516
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.034
_refine_ls_R_factor_all          0.0428
_refine_ls_R_factor_gt           0.0390
_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^)+(0.0344P)^2^+26.3217P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0888
_refine_ls_wR_factor_ref         0.0915
_reflns_number_gt                9697
_reflns_number_total             10516
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja407163z_si_002_1.cif
_cod_data_source_block           complex_7
_cod_database_code               4120308