Unsymmetrical α-diiminonickel bromide complexes: synthesis, characterization and their catalytic behavior toward ethylene
Jia, Dedong; Zhang, Wenjuan; Liu, Weiliang; Wang, Lin; Redshaw, Carl; Sun, Wen-Hua; Catalysis Science & Technology 3 (2013) 2737–; doi:10.1039/c3cy00422h

data_1556376
_publ_section_title
;
 Unsymmetrical \a-diiminonickel bromide complexes: synthesis,
 characterization and their catalytic behavior toward ethylene
;
_journal_issue                   10
_journal_name_full               'Catalysis Science &amp; Technology'
_journal_page_first              2737
_journal_paper_doi               10.1039/c3cy00422h
_journal_volume                  3
_journal_year                    2013
_chemical_formula_moiety         'C45 H41 Br2 Cl N2 Ni'
_chemical_formula_sum            'C45 H41 Br2 Cl N2 Ni'
_chemical_formula_weight         863.78
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_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                 100.77(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.6013(19)
_cell_length_b                   16.927(3)
_cell_length_c                   24.799(5)
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.41
_cell_volume                     3959.4(14)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2007)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2007)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2007)'
_computing_molecular_graphics    'XP in Siemens SHELXTL (Sheldrick, 1994)'
_computing_publication_material  'SHELX97 (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 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Saturn724+ CCD'
_diffrn_measurement_method       '\w scans at fixed \c = 45\%'
_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  0.0594
_diffrn_reflns_av_sigmaI/netI    0.0609
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            26497
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         2.41
_diffrn_standards_decay_%        none
_diffrn_standards_interval_count none
_diffrn_standards_interval_time  none
_diffrn_standards_number         none
_exptl_absorpt_coefficient_mu    2.610
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.4665
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.449
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1760
_exptl_crystal_size_max          0.539
_exptl_crystal_size_mid          0.224
_exptl_crystal_size_min          0.188
_refine_diff_density_max         0.612
_refine_diff_density_min         -0.574
_refine_diff_density_rms         0.109
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.079
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     460
_refine_ls_number_reflns         9040
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.079
_refine_ls_R_factor_gt           0.0668
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1218P)^2^+5.1785P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1943
_refine_ls_wR_factor_ref         0.2163
_reflns_number_gt                7654
_reflns_number_total             9040
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3cy00422h.txt
_cod_data_source_block           Ni4
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               1556376
_refine_ls_r_factor_ref          0.0818