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_7002612
_publ_section_title
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 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            'C10 H16 Ag2 Br4 N4'
_chemical_formula_weight         727.65
_chemical_name_systematic
;
?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_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                 104.827(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.137(6)
_cell_length_b                   12.530(8)
_cell_length_c                   8.258(5)
_cell_measurement_reflns_used    782
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      24.823
_cell_measurement_theta_min      2.822
_cell_volume                     914.0(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 0.971
_diffrn_measured_fraction_theta_max 0.971
_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  0.0478
_diffrn_reflns_av_sigmaI/netI    0.0604
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            4327
_diffrn_reflns_theta_full        27.18
_diffrn_reflns_theta_max         27.18
_diffrn_reflns_theta_min         2.31
_diffrn_standards_decay_%        10.83
_exptl_absorpt_coefficient_mu    10.880
_exptl_absorpt_correction_T_max  0.4092
_exptl_absorpt_correction_T_min  0.2922
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    2.644
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             676
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.662
_refine_diff_density_min         -1.090
_refine_diff_density_rms         0.158
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.861
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     96
_refine_ls_number_reflns         1978
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.861
_refine_ls_R_factor_all          0.0527
_refine_ls_R_factor_gt           0.0375
_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^)+(0.0423P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0803
_refine_ls_wR_factor_ref         0.0830
_reflns_number_gt                1408
_reflns_number_total             1978
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b911886a.txt
_cod_data_source_block           complex2
_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)/c
_cod_database_code               7002612