Substituent-dependent structures and catalysis of benzimidazole-tethered N-heterocyclic carbene complexes of Ag(I), Ni(II) and Pd(II).
Li, Fuwei; Hu, Jian Jin; Koh, Lip Lin; Hor, T. S. Andy; Dalton transactions (Cambridge, England : 2003) 39 (2010) 5231–5241; doi:10.1039/c000722f

data_7025432
_publ_section_title
;
 Substituent-dependent structures and catalysis of benzimidazole-tethered
 N-heterocyclic carbene complexes of Ag(I), Ni(II) and Pd(II).
;
_journal_issue                   22
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              5231
_journal_page_last               5241
_journal_paper_doi               10.1039/c000722f
_journal_volume                  39
_journal_year                    2010
_chemical_formula_sum            'C40 H40 Ag4 Cl4 N8'
_chemical_formula_weight         1206.08
_chemical_name_systematic
;
?
;
_space_group_IT_number           14
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_symmetry_space_group_name_Hall  '-P 2ybc'
_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                 98.899(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   13.040(4)
_cell_length_b                   9.580(3)
_cell_length_c                   16.361(6)
_cell_measurement_reflns_used    1784
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      27.52
_cell_measurement_theta_min      2.47
_cell_volume                     2019.3(12)
_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      295(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0684
_diffrn_reflns_av_sigmaI/netI    0.0759
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            10445
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.47
_exptl_absorpt_coefficient_mu    2.218
_exptl_absorpt_correction_T_max  0.9570
_exptl_absorpt_correction_T_min  0.7767
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.984
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'Thin Plate'
_exptl_crystal_F_000             1184
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.02
_refine_diff_density_max         1.126
_refine_diff_density_min         -1.333
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_refine_ls_number_parameters     254
_refine_ls_number_reflns         3553
_refine_ls_number_restraints     0
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_refine_ls_R_factor_all          0.1241
_refine_ls_R_factor_gt           0.0966
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0634P)^2^+28.5309P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1883
_refine_ls_wR_factor_ref         0.1994
_reflns_number_gt                2784
_reflns_number_total             3553
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c000722f.txt
_cod_data_source_block           2a
_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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7025432