Well-defined N-heterocyclic carbene silver halides of 1-cyclohexyl-3-arylmethylimidazolylidenes: synthesis, structure and catalysis in A(3)-reaction of aldehydes, amines and alkynes.
Li, Yanbo; Chen, Xiaofeng; Song, Yin; Fang, Ling; Zou, Gang; Dalton transactions (Cambridge, England : 2003) 40 (2011) 2046–2052; doi:10.1039/c0dt01074j

data_7014699
_publ_section_title
;
 Well-defined N-heterocyclic carbene silver halides of
 1-cyclohexyl-3-arylmethylimidazolylidenes: synthesis, structure and
 catalysis in A(3)-reaction of aldehydes, amines and alkynes.
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_journal_issue                   9
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              2046
_journal_page_last               2052
_journal_paper_doi               10.1039/c0dt01074j
_journal_volume                  40
_journal_year                    2011
_chemical_formula_sum            'C32 H40 Ag2 Cl2 N4'
_chemical_formula_weight         767.32
_chemical_name_systematic
;
?
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 94.549(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.1326(10)
_cell_length_b                   16.0862(16)
_cell_length_c                   19.984(2)
_cell_measurement_reflns_used    3979
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      53.019
_cell_measurement_theta_min      4.762
_cell_volume                     3247.0(6)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_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      293(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_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  0.0742
_diffrn_reflns_av_sigmaI/netI    0.0577
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            9413
_diffrn_reflns_theta_full        27.00
_diffrn_reflns_theta_max         27.00
_diffrn_reflns_theta_min         2.04
_exptl_absorpt_coefficient_mu    1.398
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.75715
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.570
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             1552
_exptl_crystal_size_max          0.498
_exptl_crystal_size_mid          0.427
_exptl_crystal_size_min          0.234
_refine_diff_density_max         1.577
_refine_diff_density_min         -0.850
_refine_diff_density_rms         0.093
_refine_ls_extinction_coef       0.0012(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.099
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     182
_refine_ls_number_reflns         3523
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.099
_refine_ls_R_factor_all          0.0595
_refine_ls_R_factor_gt           0.0501
_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^)+(0.0697P)^2^+2.5341P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1380
_refine_ls_wR_factor_ref         0.1442
_reflns_number_gt                2781
_reflns_number_total             3523
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            C0DT01074J.TXT
_cod_data_source_block           cd26330
_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 1555 2011-01-17 13:19:09Z saulius 
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_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7014699