Formation and crystallographic elucidation of stable [4 + 2]-coordinate nickel(ii) N,S-heterocyclic carbene (NSHC) complexes
Ding, Nini; Zhang, Jun; Hor, T. S. Andy; Dalton Transactions  (2009) 1853–1858; doi:10.1039/b815876b

data_7000667
_publ_section_title
;
 Formation and crystallographic elucidation of stable [4 +
 2]-coordinate nickel(ii) N,S-heterocyclic carbene (NSHC) complexes
;
_journal_issue                   10
_journal_name_full               'Dalton Transactions'
_journal_page_first              1853
_journal_page_last               1858
_journal_paper_doi               10.1039/b815876b
_journal_year                    2009
_chemical_formula_sum            'C18 H18 I2 N2 Ni S2'
_chemical_formula_weight         638.97
_chemical_name_systematic
;
?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 93.8170(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.0231(5)
_cell_length_b                   10.4549(5)
_cell_length_c                   11.1487(6)
_cell_measurement_reflns_used    5110
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      27.51
_cell_measurement_theta_min      2.67
_cell_volume                     1049.39(10)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      223(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0208
_diffrn_reflns_av_sigmaI/netI    0.0212
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            7234
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         2.67
_exptl_absorpt_coefficient_mu    4.069
_exptl_absorpt_correction_T_max  0.3749
_exptl_absorpt_correction_T_min  0.2090
_exptl_absorpt_correction_type   'Sadabs, (Sheldrick 2001)'
_exptl_crystal_colour            Red
_exptl_crystal_density_diffrn    2.022
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       BLOCK
_exptl_crystal_F_000             612
_exptl_crystal_size_max          0.56
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.670
_refine_diff_density_min         -0.884
_refine_diff_density_rms         0.080
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     116
_refine_ls_number_reflns         2404
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.043
_refine_ls_R_factor_all          0.0232
_refine_ls_R_factor_gt           0.0218
_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^)+(0.0242P)^2^+0.9298P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0536
_refine_ls_wR_factor_ref         0.0543
_reflns_number_gt                2270
_reflns_number_total             2404
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b815876b.txt
_cod_data_source_block           Compound8
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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_sg_symbol_H-M      P2(1)/n
_cod_database_code               7000667