Preparation and Reactivities of PCP-Type Pincer Complexes of Nickel. Impact of Different Ligand Skeletons and Phosphine Substituents
Castonguay, Annie; Beauchamp, André L.; Zargarian, Davit; Organometallics 27 (2008) 5723–; doi:10.1021/om8005454

data_4072048
_publ_section_title
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 Preparation and Reactivities of PCP-Type Pincer Complexes of Nickel.
 Impact of Different Ligand Skeletons and Phosphine Substituents
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_journal_issue                   21
_journal_name_full               Organometallics
_journal_page_first              5723
_journal_paper_doi               10.1021/om8005454
_journal_volume                  27
_journal_year                    2008
_chemical_compound_source        'Synthesized by the authors. See text'
_chemical_formula_moiety         'C20 H35 Br Ni P2'
_chemical_formula_sum            'C20 H35 Br Ni P2'
_chemical_formula_weight         476.04
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           167
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_Hall  '-R 3 2"c'
_symmetry_space_group_name_H-M   'R -3 c :H'
_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                120.00
_cell_formula_units_Z            18
_cell_length_a                   25.2547(3)
_cell_length_b                   25.2547(3)
_cell_length_c                   20.6154(5)
_cell_measurement_reflns_used    11464
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      67.43
_cell_measurement_theta_min      3.50
_cell_volume                     11386.9(3)
_computing_cell_refinement       'SMART (Bruker, 1999)'
_computing_data_collection       'SMART (Bruker, 1999)'
_computing_data_reduction        'SAINT (Bruker, 1999)'
_computing_molecular_graphics    'SHELXTL (Bruker, 1997)'
_computing_publication_material  'UdMX (Marris, 2004)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker Smart 2000'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'X-ray Sealed Tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.034
_diffrn_reflns_av_sigmaI/netI    0.0176
_diffrn_reflns_limit_h_max       30
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       30
_diffrn_reflns_limit_k_min       -30
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            49825
_diffrn_reflns_theta_full        68.45
_diffrn_reflns_theta_max         68.45
_diffrn_reflns_theta_min         3.50
_diffrn_standards_decay_%        0.00
_diffrn_standards_number         132
_exptl_absorpt_coefficient_mu    4.132
_exptl_absorpt_correction_T_max  0.635
_exptl_absorpt_correction_T_min  0.565
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sadabs (Sheldrick,1996)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.250
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             4464
_exptl_crystal_size_max          0.19
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.11
_refine_diff_density_max         1.509
_refine_diff_density_min         -0.250
_refine_diff_density_rms         0.154
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.186
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     115
_refine_ls_number_reflns         2329
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.186
_refine_ls_R_factor_all          0.0517
_refine_ls_R_factor_gt           0.0436
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1048P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1517
_refine_ls_wR_factor_ref         0.1578
_reflns_number_gt                1890
_reflns_number_total             2329
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            om8005454_si_001.cif
_cod_data_source_block           cast24
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Trigonal' changed to 'trigonal'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_geom_bond_publ_flag' value 'Y' changed to 'y'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29 (17
times).

'_geom_angle_publ_flag' value 'Y' changed to 'y' according
to /home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary
named 'cif_core.dic' version 2.4.1 from 2010-06-29 (27 times).

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      R-3c
_cod_database_code               4072048