β-Diketiminato Nickel(I) Complexes with Very Weak Ligation Allowing for H2and N2Activation
Pfirrmann, Stefan; Yao, Shenglai; Ziemer, Burkhard; Stösser, Reinhard; Driess, Matthias; Limberg, Christian; Organometallics 28 (2009) 6855–; doi:10.1021/om9007983

data_4070433
_publ_section_title
;
 \b-Diketiminato Nickel(I) Complexes with Very Weak Ligation Allowing for
 H2and N2Activation
;
_journal_issue                   24
_journal_name_full               Organometallics
_journal_page_first              6855
_journal_paper_doi               10.1021/om9007983
_journal_volume                  28
_journal_year                    2009
_chemical_formula_moiety         'C58 H82 N4 Ni2'
_chemical_formula_sum            'C58 H82 N4 Ni2'
_chemical_formula_weight         952.70
_chemical_name_systematic
; 
 Bis((N,N'-bis(2,6-di-isopropylphenyl)pentan-2,4-di-
iminato-N,N')-nickel(I) 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 90.302(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   17.0249(8)
_cell_length_b                   18.1902(9)
_cell_length_c                   16.8559(7)
_cell_measurement_reflns_used    2000
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      25
_cell_measurement_theta_min      5
_cell_volume                     5220.0(4)
_computing_cell_refinement       'X-AREA (Stoe & Cie, 2002)'
_computing_data_collection       'X-AREA (Stoe & Cie, 2002)'
_computing_data_reduction        'X-RED (Stoe & Cie, 2002)'
_computing_molecular_graphics    'DIAMOND (Brandenburg & Berndt, 1999)'
_computing_publication_material  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR2004 (Burla et al., 2005)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 6.67
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device       'Stoe IPDS-2t diffractometer'
_diffrn_measurement_method       '\w-rotation,\w-incr.=1\%,243 exposures'
_diffrn_radiation_collimation    '0.5 mm diameter monocapillary'
_diffrn_radiation_monochromator  'planar graphite'
_diffrn_radiation_source         'long fine focus sealed X-ray tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0472
_diffrn_reflns_av_sigmaI/netI    0.0307
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            31743
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         2.42
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.761
_exptl_absorpt_correction_T_max  0.9277
_exptl_absorpt_correction_T_min  0.8626
_exptl_absorpt_correction_type   refdelf
_exptl_absorpt_process_details
;
The correction was carried out by ABSCOR (Stoe, 1997), a modification of
DIFABS (Walker, N. & Stuart, D. (1983). Acta Cryst. A39, 158-166.
In contrary to DIFABS, ABSCOR loads F^2^ values instead of F ones.
;
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.212
_exptl_crystal_density_method    none
_exptl_crystal_description       block
_exptl_crystal_F_000             2056
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.494
_refine_diff_density_min         -0.338
_refine_diff_density_rms         0.047
_refine_ls_extinction_coef       0.00017(10)
_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   0.913
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     300
_refine_ls_number_reflns         5131
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.913
_refine_ls_R_factor_all          0.0395
_refine_ls_R_factor_gt           0.0282
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0437P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0632
_refine_ls_wR_factor_ref         0.0654
_reflns_number_gt                4114
_reflns_number_total             5131
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            om9007983_si_002.cif
_cod_data_source_block           2
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               4070433