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_4120309
_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            'C55 H86 Cl Ir K N O6 P2'
_chemical_formula_weight         1185.94
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           29
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2b'
_symmetry_space_group_name_H-M   'P b c 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                   12.8544(19)
_cell_length_b                   19.329(3)
_cell_length_c                   23.798(4)
_cell_measurement_temperature    173(2)
_cell_volume                     5912.9(16)
_computing_cell_refinement       'Rigaku AFC10/Saturn 70 CCD'
_computing_data_collection       'Rigaku AFC10/Saturn 70 CCD'
_computing_data_reduction        'Rigaku AFC10/Saturn 70 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      173(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_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     0.71070
_diffrn_reflns_av_R_equivalents  0.0497
_diffrn_reflns_av_sigmaI/netI    0.0466
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            44534
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         3.14
_exptl_absorpt_coefficient_mu    2.473
_exptl_absorpt_correction_T_max  0.7080
_exptl_absorpt_correction_T_min  0.4534
_exptl_absorpt_correction_type   numerical
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.332
_exptl_crystal_description       block
_exptl_crystal_F_000             2456
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.15
_refine_diff_density_max         2.339
_refine_diff_density_min         -1.463
_refine_diff_density_rms         0.118
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.024(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     597
_refine_ls_number_reflns         13401
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.043
_refine_ls_R_factor_all          0.0607
_refine_ls_R_factor_gt           0.0533
_refine_ls_shift/su_max          0.017
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0426P)^2^+27.5412P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1245
_refine_ls_wR_factor_ref         0.1297
_reflns_number_gt                11836
_reflns_number_total             13401
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja407163z_si_002_2.cif
_cod_data_source_block           complex_3
_cod_original_cell_volume        5912.8(15)
_cod_database_code               4120309