1,1'-(<i>p</i>-Phenylenedimethylene)dipyridinium trichloridoiodidomercurate(II)
He, Zhan-Hang; Tang, Ming-Sheng; Niu, Yun-Yin; Lv, Xiao-Rui; Ng, Seik Weng; Acta Crystallographica Section E 63 (2007) m1896–m1896; doi:10.1107/S1600536807027481

data_2214119
_publ_section_title
;
 1,1'-(<i>p</i>-Phenylenedimethylene)dipyridinium
 trichloridoiodidomercurate(II)
;
_journal_coeditor_code           CI2390
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              m1896
_journal_page_last               m1896
_journal_paper_doi               10.1107/S1600536807027481
_journal_volume                  63
_journal_year                    2007
_chemical_formula_iupac          '(C18 H18 N2) [Hg Cl2.75 I1.25]'
_chemical_formula_moiety         'C18 H18 N2 2+ , Hg Cl2.75 I1.25 2-'
_chemical_formula_sum            'C18 H18 Cl2.75 Hg I1.25 N2'
_chemical_formula_weight         719.05
_chemical_name_systematic
;
1,1'-(p-Phenylenedimethylene)dipyridinium trichloridoiodidomercurate(II)
;
_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           SHELXL97
_cell_angle_alpha                90.00
_cell_angle_beta                 98.7850(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.2901(9)
_cell_length_b                   9.4764(6)
_cell_length_c                   16.1510(10)
_cell_measurement_reflns_used    4098
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      22.8
_cell_measurement_theta_min      2.5
_cell_volume                     2161.5(2)
_computing_cell_refinement       'SAINT (Bruker, 2004)'
_computing_data_collection       'SMART (Bruker, 2004)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'X-SEED (Barbour, 2001)'
_computing_publication_material  'publCIF (Westrip, 2007)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      295(2)
_diffrn_measured_fraction_theta_full 1.00
_diffrn_measured_fraction_theta_max 1.00
_diffrn_measurement_device_type  'Bruker APEX area-detector'
_diffrn_measurement_method       '\f and \w'
_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  0.037
_diffrn_reflns_av_sigmaI/netI    0.035
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            15087
_diffrn_reflns_theta_full        25.0
_diffrn_reflns_theta_max         25.0
_diffrn_reflns_theta_min         1.4
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    9.250
_exptl_absorpt_correction_T_max  0.400
_exptl_absorpt_correction_T_min  0.089
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.210
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1332
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.12
_refine_diff_density_max         1.10
_refine_diff_density_min         -0.57
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.05
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     224
_refine_ls_number_reflns         3792
_refine_ls_number_restraints     4
_refine_ls_restrained_S_all      1.05
_refine_ls_R_factor_all          0.055
_refine_ls_R_factor_gt           0.042
_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^)+(0.0609P)^2^+2.8764P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.106
_refine_ls_wR_factor_ref         0.113
_reflns_number_gt                3097
_reflns_number_total             3792
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ci2390.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2214119
_cod_database_fobs_code          2214119