Polynuclear chloromercurate(II) systems in their chloropyridinium salts
Linden, Anthony; James, Bruce D.; Liesegang, John; Gonis, Nick; Acta Crystallographica Section B 55 (1999) 396–409; doi:10.1107/S010876819801550X

data_2003137
_publ_section_title
;
 Polynuclear chloromercurate(II) systems in their chloropyridinium
 salts
;
_journal_issue                   3
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              396
_journal_page_last               409
_journal_paper_doi               10.1107/S010876819801550X
_journal_volume                  55
_journal_year                    1999
_chemical_formula_moiety         '(C5 H5 Cl N 1+)2, Hg2 Cl6 2-'
_chemical_formula_structural     '(C5 H5 Cl N 1+)2, Hg2 Cl6 2-'
_chemical_formula_sum            'C10 H10 Cl8 Hg2 N2'
_chemical_formula_weight         842.98
_chemical_melting_point          385
_chemical_name_systematic
;
bis(4-chloropyridinium) hexachlorodimercurate(II)
;
_space_group_IT_number           12
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2y'
_symmetry_space_group_name_H-M   'C 1 2/m 1'
_cell_angle_alpha                90
_cell_angle_beta                 97.48(2)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   13.447(3)
_cell_length_b                   7.534(2)
_cell_length_c                   9.939(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    173.0(10)
_cell_measurement_theta_max      20.0
_cell_measurement_theta_min      19.0
_cell_volume                     998.3(4)
_computing_cell_refinement
;
MSC/AFC Diffractometer Control Software (Molecular Structure
Corporation, 1991)
;
_computing_data_collection
;
MSC/AFC Diffractometer Control Software (Molecular Structure
Corporation, 1991)
;
_computing_data_reduction
;
TEXSAN PROCESS (Molecular Structure Corporation, 1989)
;
_computing_molecular_graphics    'ORTEPIII (Burnett & Johnson, 1996)'
_computing_publication_material
;
TEXSAN FINISH (Molecular Structure Corporation, 1989)
 and local programs
;
_computing_structure_refinement
;
TEXSAN LS (Molecular Structure Corporation, 1989)
;
_computing_structure_solution    'DIRDIF92 Patterson (Beurskens et al., 1992)'
_diffrn_ambient_temperature      173.0(10)
_diffrn_measurement_device_type  'Rigaku AFC-5R diffractometer'
_diffrn_measurement_method       \w--2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Rigaku rotating anode generator'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.088
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            1618
_diffrn_reflns_theta_max         30
_diffrn_reflns_theta_min         2.5
_diffrn_standards_decay_%        'no decay'
_diffrn_standards_interval_count 150
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    16.46
_exptl_absorpt_correction_T_max  0.200
_exptl_absorpt_correction_T_min  0.034
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details   '(De Meulenaer & Tompa, 1965)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.804
_exptl_crystal_density_meas      ?
_exptl_crystal_description       prism
_exptl_crystal_F_000             760
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.15
_refine_diff_density_max         2.81
_refine_diff_density_min         -3.16
_refine_ls_abs_structure_details ' ?'
_refine_ls_extinction_coef       1.6E-6(3)
_refine_ls_extinction_method     'Zachariasen (1963)'
_refine_ls_goodness_of_fit_all   0.0653
_refine_ls_goodness_of_fit_ref   2.187
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_constraints    0
_refine_ls_number_parameters     61
_refine_ls_number_reflns         1328
_refine_ls_number_restraints     0
_refine_ls_R_factor_gt           0.0528
_refine_ls_shift/su_max          0.0007
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details     w=1/[\s^2^(F~o~)+(0.015F~o~)^2^]
_refine_ls_weighting_scheme      sigma
_refine_ls_wR_factor_all         0.0675
_refine_ls_wR_factor_ref         0.0641
_reflns_number_gt                1329
_reflns_number_total             1557
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            sh0124.cif
_cod_data_source_block           V
_cod_original_cell_volume        998.3(3)
_cod_original_formula_sum        'C10 H10 Cl8 Hg2 N2 '
_cod_database_code               2003137
_cod_database_fobs_code          2003137