Poly[3,3'-diethyl-1,1'-(ethane-1,2-diyl)diimidazolium [tetra-μ-bromido-diargentate(I)]]
Wang, Zhiguo; Liu, Siman; Zhang, Na; Acta Crystallographica Section E 66 (2010) m845–; doi:10.1107/S160053681002146X

data_2226710
_publ_section_title
;
 Poly[3,3'-diethyl-1,1'-(ethane-1,2-diyl)diimidazolium
 [tetra-\m-bromido-diargentate(I)]]
;
_journal_coeditor_code           WM2354
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              m845
_journal_paper_doi               10.1107/S160053681002146X
_journal_volume                  66
_journal_year                    2010
_chemical_formula_iupac          '(C12 H20 N4) [Ag2 Br4]'
_chemical_formula_moiety         'C12 H20 N4 2+, Ag2 Br4 2-'
_chemical_formula_sum            'C12 H20 Ag2 Br4 N4'
_chemical_formula_weight         755.90
_chemical_name_systematic
;
Poly[3,3'-diethyl-1,1'-(ethane-1,2-diyl)diimidazolium
[tetra-\m-bromido-diargentate(I)]]
;
_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                 106.294(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.5593(13)
_cell_length_b                   12.9512(17)
_cell_length_c                   8.4565(11)
_cell_measurement_reflns_used    3112
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      27.80
_cell_measurement_theta_min      2.22
_cell_volume                     1004.9(2)
_computing_cell_refinement       'SAINT (Bruker, 2006)'
_computing_data_collection       'SMART (Bruker, 2006)'
_computing_data_reduction        'SAINT (Bruker, 2006)'
_computing_molecular_graphics    'DIAMOND (Crystal Impact, 2008)'
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker SMART 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  0.0233
_diffrn_reflns_av_sigmaI/netI    0.0247
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       5
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            5036
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         2.72
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    9.901
_exptl_absorpt_correction_T_max  0.2193
_exptl_absorpt_correction_T_min  0.1910
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
(SADABS; Sheldrick, 2006)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.498
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             708
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.641
_refine_diff_density_min         -0.877
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.057
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     101
_refine_ls_number_reflns         1766
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.057
_refine_ls_R_factor_all          0.0371
_refine_ls_R_factor_gt           0.0313
_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^)+(0.0366P)^2^+1.7373P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0752
_refine_ls_wR_factor_ref         0.0774
_reflns_number_gt                1533
_reflns_number_total             1766
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            wm2354.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2226710
_cod_database_fobs_code          2226710