A method for the synthesis of nickel(0) bis(carbene) complexes
Danopoulos, Andreas A.; Pugh, David; Dalton Transactions  (2008) 30–; doi:10.1039/b714988c

data_7003267
_publ_section_title
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 A method for the synthesis of nickel(0) bis(carbene) complexes
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_journal_issue                   1
_journal_name_full               'Dalton Transactions'
_journal_page_first              30
_journal_paper_doi               10.1039/b714988c
_journal_year                    2008
_chemical_formula_moiety         'C22 H44 N4 Ni'
_chemical_formula_sum            'C22 H44 N4 Ni'
_chemical_formula_weight         423.32
_chemical_name_systematic
;
?
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_space_group_IT_number           110
_symmetry_cell_setting           tetragonal
_symmetry_Int_Tables_number      110
_symmetry_space_group_name_Hall  'I 4bw -2c'
_symmetry_space_group_name_H-M   'I 41 c d'
_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            8
_cell_length_a                   11.6779(6)
_cell_length_b                   11.6779(6)
_cell_length_c                   35.091(3)
_cell_measurement_reflns_used    105511
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     4785.5(5)
_computing_cell_refinement
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_computing_data_collection       'COLLECT (Hooft, R.W.W., 1998)'
_computing_data_reduction
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_computing_molecular_graphics    'ORTEP-III (Farrugia, 1997)'
_computing_publication_material
'PLATON (Spek, 2003), WinGX (Farrugia, 1999) and enCIFer (Allen et al., 2004).'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type
'Bruker-Nonius Roper CCD camera on \k-goniostat'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Bruker-Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1150
_diffrn_reflns_av_sigmaI/netI    0.0432
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       44
_diffrn_reflns_limit_l_min       -45
_diffrn_reflns_number            26139
_diffrn_reflns_theta_full        27.58
_diffrn_reflns_theta_max         27.58
_diffrn_reflns_theta_min         3.49
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.824
_exptl_absorpt_correction_T_max  0.8795
_exptl_absorpt_correction_T_min  0.8525
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2007/2 (Sheldrick, G.M., 2007)'
_exptl_crystal_colour            'intense brown'
_exptl_crystal_density_diffrn    1.175
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1856
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.941
_refine_diff_density_min         -0.960
_refine_diff_density_rms         0.100
_refine_ls_abs_structure_details
'Flack H D (1983), Acta Cryst. A39, 876-881, 1350 Friedel pairs'
_refine_ls_abs_structure_Flack   0.11(12)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.214
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     129
_refine_ls_number_reflns         1408
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.214
_refine_ls_R_factor_all          0.1093
_refine_ls_R_factor_gt           0.0863
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0000P)^2^+65.6720P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1759
_refine_ls_wR_factor_ref         0.1837
_reflns_number_gt                1100
_reflns_number_total             1408
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b714988c.txt
_cod_data_source_block           Ni(IBut)2
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_cell_volume        4785.5(6)
_cod_original_sg_symbol_H-M      I41cd
_cod_database_code               7003267