Bis(ether-functionalized NHC) Nickel(II) Complexes,TranstoCisIsomerization Triggered by Water Coordination, and Catalytic Ethylene Oligomerization
Hameury, Sophie; de Frémont, Pierre; Breuil, Pierre-Alain R.; Olivier-Bourbigou, Hélène; Braunstein, Pierre; Organometallics 34 (2015) 2183–; doi:10.1021/om5008506

data_4084558
_publ_section_title
;
 Bis(ether-functionalized NHC) Nickel(II)
 Complexes,TranstoCisIsomerization Triggered by Water Coordination, and
 Catalytic Ethylene Oligomerization
;
_journal_issue                   11
_journal_name_full               Organometallics
_journal_page_first              2183
_journal_paper_doi               10.1021/om5008506
_journal_volume                  34
_journal_year                    2015
_chemical_formula_moiety         'C20 H36 I2 N4 Ni O2'
_chemical_formula_sum            'C20 H36 I2 N4 Ni O2'
_chemical_formula_weight         677.04
_chemical_name_common            '[NiI2{ImnBu(EtOMe)}2]'
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                70.248(5)
_cell_angle_beta                 75.665(4)
_cell_angle_gamma                82.213(5)
_cell_formula_units_Z            1
_cell_length_a                   8.2699(7)
_cell_length_b                   8.7576(7)
_cell_length_c                   9.8261(9)
_cell_measurement_reflns_used    7542
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.485
_cell_measurement_theta_min      0.998
_cell_volume                     647.88(10)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Bruker AXS BV, 1997-2004)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'Sir 97'
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       'CCD rotation images, thick slices'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0460
_diffrn_reflns_av_unetI/netI     0.0525
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            5828
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         2.55
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    3.153
_exptl_absorpt_correction_T_max  0.6772
_exptl_absorpt_correction_T_min  0.5913
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
[c.f. r.h. blessing, acta cryst. (1995), a51, 33-38]
;
_exptl_crystal_colour            Orange
_exptl_crystal_density_diffrn    1.735
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Needle
_exptl_crystal_F_000             334
_exptl_crystal_recrystallization_method 'THF - Pentane'
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.775
_refine_diff_density_min         -0.906
_refine_diff_density_rms         0.123
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.058
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     135
_refine_ls_number_reflns         2531
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.058
_refine_ls_R_factor_all          0.0507
_refine_ls_R_factor_gt           0.0363
_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^)+(0.0226P)^2^+0.7491P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0706
_refine_ls_wR_factor_ref         0.0745
_reflns_number_gt                2110
_reflns_number_total             2531
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om5008506_si_002.cif
_cod_data_source_block           compound_23
_cod_depositor_comments
'Adding full bibliography for 4084545--4084559.cif.'
_cod_database_code               4084558