A Structurally Rigid Bis(amido) Ligand Framework in Low-Coordinate Ni(I), Ni(II), and Ni(III) Analogues Provides Access to a Ni(III) Methyl Complex via Oxidative Addition
Michael I. Lipschutz; Xinzheng Yang; Ruchira Chatterjee; T. Don Tilley; Journal of the American Chemical Society 135 (2013) 15298–15301; doi:10.1021/ja408151h

data_4120943
_publ_section_title
;
 A Structurally Rigid Bis(amido) Ligand Framework in Low-Coordinate Ni(I),
 Ni(II), and Ni(III) Analogues Provides Access to a Ni(III) Methyl Complex
 via Oxidative Addition
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              15298
_journal_page_last               15301
_journal_paper_doi               10.1021/ja408151h
_journal_volume                  135
_journal_year                    2013
_chemical_formula_sum            'C46 H88 N3 Ni Si2'
_chemical_formula_weight         798.08
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_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                   10.7683(6)
_cell_length_b                   19.8450(12)
_cell_length_c                   22.5472(12)
_cell_measurement_reflns_used    9858
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.24
_cell_volume                     4818.3(5)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    ORTEP32
_computing_publication_material  WinGX
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    SIR-97
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 8.366
_diffrn_measured_fraction_theta_full 0.980
_diffrn_measured_fraction_theta_max 0.839
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  'QUAZAR multilayer mirrors'
_diffrn_radiation_source         'microfocus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0379
_diffrn_reflns_av_sigmaI/netI    0.0613
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            36187
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         28.35
_diffrn_reflns_theta_min         1.37
_exptl_absorpt_coefficient_mu    0.484
_exptl_absorpt_correction_T_max  0.9856
_exptl_absorpt_correction_T_min  0.9623
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.100
_exptl_crystal_description       block
_exptl_crystal_F_000             1764
_exptl_crystal_size_max          0.08
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.401
_refine_diff_density_min         -0.379
_refine_diff_density_rms         0.060
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.002(8)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.037
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     487
_refine_ls_number_reflns         9409
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.037
_refine_ls_R_factor_all          0.0526
_refine_ls_R_factor_gt           0.0364
_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^)+(0.0264P)^2^+0.4980P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0625
_refine_ls_wR_factor_ref         0.0673
_reflns_number_gt                7912
_reflns_number_total             9409
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja408151h_si_002.cif
_cod_data_source_block           shelxl
_cod_database_code               4120943