Application of Open Chain Tetraimidazolium Salts as Precursors for the Synthesis of Silver Tetra(NHC) Complexes.
Weiss, Daniel T.; Haslinger, Stefan; Jandl, Christian; Pöthig, Alexander; Cokoja, Mirza; Kühn, Fritz E; Inorganic chemistry  (2014) 141231135557003–; doi:10.1021/ic502838x

data_4342999
_publ_section_title
;
 Application of Open Chain Tetraimidazolium Salts as Precursors for the
 Synthesis of Silver Tetra(NHC) Complexes.
;
_journal_name_full               'Inorganic chemistry'
_journal_page_first              141231135557003
_journal_paper_doi               10.1021/ic502838x
_journal_year                    2014
_chemical_compound_source        'see text'
_chemical_formula_moiety         'C34 H40 Ag4 N16, 4(F6 P)'
_chemical_formula_sum            'C34 H40 Ag4 F24 N16 P4'
_chemical_formula_weight         1684.18
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      15
_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
_cell_angle_alpha                90
_cell_angle_beta                 108.845(1)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.8234(2)
_cell_length_b                   27.3276(5)
_cell_length_c                   17.0264(3)
_cell_measurement_reflns_used    9729
_cell_measurement_temperature    123
_cell_measurement_theta_max      25.3761
_cell_measurement_theta_min      2.5180
_cell_volume                     5646.77(17)
_computing_cell_refinement       'SAINT (Bruker, 2008b)'
_computing_data_collection       'APEX II Control Software (Bruker, 2008a)'
_computing_data_reduction        'SAINT (Bruker, 2008b)'
_computing_molecular_graphics    'PLATON (Spek, 2011)'
_computing_publication_material  'PLATON (Spek, 2011), enCIFer (Allen, 2004)'
_computing_structure_refinement
'SHELXL97 (Sheldrick, 2008), SHELXLE (Huebschle, 2011)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      123
_diffrn_detector                 ' CCD plate '
_diffrn_detector_area_resol_mean 16
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device       ' \k-geometry diffractometer '
_diffrn_measurement_device_type  ' Bruker APEX-II CCD '
_diffrn_measurement_method       ' phi- and omega-rotation '
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0206
_diffrn_reflns_av_sigmaI/netI    0.0094
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       32
_diffrn_reflns_limit_k_min       -32
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            65924
_diffrn_reflns_reduction_process
;
;
_diffrn_reflns_theta_full        25.35
_diffrn_reflns_theta_max         25.35
_diffrn_reflns_theta_min         1.84
_exptl_absorpt_coefficient_mu    1.604
_exptl_absorpt_correction_T_max  0.7452
_exptl_absorpt_correction_T_min  0.6047
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, Bruker, 2008b'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.981
_exptl_crystal_density_method    'Not Measured'
_exptl_crystal_description       fragment
_exptl_crystal_F_000             3280
_exptl_crystal_size_max          0.380
_exptl_crystal_size_mid          0.330
_exptl_crystal_size_min          0.180
_platon_squeeze_details
;
The unit cell contains 4 disordered molecules of diethyl ether on a special 
position which therefore have been treated as a diffuse contribution to the 
overall scattering without specific atom positions by SQUEEZE/PLATON.
;
_refine_diff_density_max         0.656
_refine_diff_density_min         -0.513
_refine_diff_density_rms         0.083
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.082
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     411
_refine_ls_number_reflns         5186
_refine_ls_number_restraints     36
_refine_ls_restrained_S_all      1.118
_refine_ls_R_factor_all          0.0234
_refine_ls_R_factor_gt           0.0213
_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^)+(0.0319P)^2^+16.3560P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0590
_refine_ls_wR_factor_ref         0.0600
_reflns_number_gt                4862
_reflns_number_total             5186
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ic502838x_si_002.cif
_cod_data_source_block           compound_4
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               4342999