Synthesis, structure and transmetalation of N-heterocyclic carbene complex of silver. Evidence of halogen exchange during the synthetic process
Xiao, Xu-Qiong; Jin, Guo-Xin; Dalton Transactions  (2009) 9298–; doi:10.1039/b911886a

data_7002611
_publ_section_title
;
 Synthesis, structure and transmetalation of N-heterocyclic carbene
 complex of silver. Evidence of halogen exchange during the synthetic
 process
;
_journal_issue                   42
_journal_name_full               'Dalton Transactions'
_journal_page_first              9298
_journal_paper_doi               10.1039/b911886a
_journal_year                    2009
_chemical_formula_sum            'C20 H28 Ag2 Cl2 N8'
_chemical_formula_weight         667.14
_chemical_name_systematic
;
?
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                70.930(5)
_cell_angle_beta                 71.741(5)
_cell_angle_gamma                81.246(6)
_cell_formula_units_Z            2
_cell_length_a                   9.803(4)
_cell_length_b                   11.191(5)
_cell_length_c                   12.664(6)
_cell_measurement_reflns_used    728
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.332
_cell_measurement_theta_min      2.838
_cell_volume                     1245.0(10)
_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 0.979
_diffrn_measured_fraction_theta_max 0.979
_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  0.0457
_diffrn_reflns_av_sigmaI/netI    0.0629
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -6
_diffrn_reflns_number            5190
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         1.77
_diffrn_standards_decay_%        3.52
_exptl_absorpt_coefficient_mu    1.812
_exptl_absorpt_correction_T_max  0.8686
_exptl_absorpt_correction_T_min  0.7133
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.780
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             664
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.963
_refine_diff_density_min         -1.069
_refine_diff_density_rms         0.136
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.939
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     295
_refine_ls_number_reflns         4304
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.939
_refine_ls_R_factor_all          0.0692
_refine_ls_R_factor_gt           0.0493
_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^)+(0.0734P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1226
_refine_ls_wR_factor_ref         0.1269
_reflns_number_gt                2958
_reflns_number_total             4304
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b911886a.txt
_cod_data_source_block           complex1
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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        1245.0(9)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7002611