#------------------------------------------------------------------------------
#$Date: 2016-02-20 05:06:23 +0200 (Sat, 20 Feb 2016) $
#$Revision: 176774 $
#$URL: svn://www.crystallography.net/cod/cif/2/20/04/2200422.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/. The original data for this entry
# were provided by IUCr Journals, http://journals.iucr.org/.
#
# The file may be used within the scientific community so long as
# proper attribution is given to the journal article from which the
# data were obtained.
#
data_2200422
loop_
_publ_author_name
'Matthias Weil'
_publ_section_title
;
 [Hg(pyridine)₂][Cr₂O₇], a compound used for a quick assay method
 to quantify soluble HgII ions
;
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              m322
_journal_page_last               m324
_journal_paper_doi               10.1107/S1600536801010455
_journal_volume                  57
_journal_year                    2001
_chemical_formula_iupac          '[Hg (C5 H5 N1)2] [Cr2 O7]'
_chemical_formula_moiety         'Hg N2 C10 H10 2+, Cr2 O7 2-'
_chemical_formula_sum            'C10 H10 Cr2 Hg N2 O7'
_chemical_formula_weight         574.79
_chemical_name_systematic
;
bis(pyridine-N)mercury(II) dichromate(VI)
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 115.0180(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   15.4741(5)
_cell_length_b                   15.0135(5)
_cell_length_c                   14.0407(5)
_cell_measurement_reflns_used    10078
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.278
_cell_measurement_theta_min      2.714
_cell_volume                     2955.89(17)
_computing_cell_refinement       'SAINT (Siemens, 1996)'
_computing_data_collection       'SMART (Siemens, 1996)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'ATOMS for WINDOWS (Dowty, 1998)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Siemens SMART CCD area-detector'
_diffrn_measurement_method       ω
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     .71073
_diffrn_reflns_av_R_equivalents  .0302
_diffrn_reflns_av_sigmaI/netI    .0192
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            19668
_diffrn_reflns_theta_full        28.29
_diffrn_reflns_theta_max         28.29
_diffrn_reflns_theta_min         1.99
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    11.840
_exptl_absorpt_correction_T_max  .611956
_exptl_absorpt_correction_T_min  .366355
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    2.583
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       parallelepiped
_exptl_crystal_F_000             2144
_exptl_crystal_size_max          .100
_exptl_crystal_size_mid          .065
_exptl_crystal_size_min          .040
_refine_diff_density_max         1.055
_refine_diff_density_min         -.582
_refine_ls_extinction_coef       .000071(11)
_refine_ls_extinction_method     SHELXL97
_refine_ls_goodness_of_fit_ref   1.208
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     204
_refine_ls_number_reflns         3683
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.208
_refine_ls_R_factor_all          .0241
_refine_ls_R_factor_gt           .0178
_refine_ls_shift/su_max          .001
_refine_ls_shift/su_mean         .000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[σ²(Fo²)+(0.0166P)²+2.3706P] where P = (Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         .0458
_reflns_number_gt                3186
_reflns_number_total             3683
_reflns_threshold_expression     I>2σ(I)
_cod_data_source_file            cf6087.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               2200422
_cod_database_fobs_code          2200422
loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x, y, -z+1/2'
'x+1/2, y+1/2, z'
'-x+1/2, y+1/2, -z+1/2'
'-x, -y, -z'
'x, -y, z-1/2'
'-x+1/2, -y+1/2, -z'
'x+1/2, -y+1/2, z-1/2'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_adp_type
_atom_site_calc_flag
_atom_site_refinement_flags
_atom_site_occupancy
_atom_site_disorder_assembly
_atom_site_disorder_group
_atom_site_type_symbol
Hg1 .0000 .774387(11) .2500 .02787(6) Uani d S 1 . . Hg
Hg2 .2500 .7500 1.0000 .03017(6) Uani d S 1 . . Hg
Cr1 .01526(4) .73603(3) .53425(4) .02824(12) Uani d . 1 . . Cr
Cr2 .23539(4) .73338(3) .72142(4) .02824(12) Uani d . 1 . . Cr
O1 -.0124(2) .79567(19) .4289(2) .0482(7) Uani d . 1 . . O
O2 .0232(2) .63289(18) .5100(2) .0539(7) Uani d . 1 . . O
O3 -.06502(18) .74723(17) .5787(2) .0401(6) Uani d . 1 . . O
O4 .12511(18) .77627(19) .6295(2) .0465(7) Uani d . 1 . . O
O5 .31376(18) .73993(17) .6739(2) .0414(6) Uani d . 1 . . O
O6 .22471(19) .63117(18) .7478(2) .0550(8) Uani d . 1 . . O
O7 .2678(2) .79329(19) .8269(2) .0464(6) Uani d . 1 . . O
N1 .0000 .6354(2) .2500 .0309(9) Uani d S 1 . . N
N2 .0000 .9137(2) .2500 .0281(8) Uani d S 1 . . N
N3 .25972(19) .61034(18) .9887(2) .0309(6) Uani d . 1 . . N
C1 .0582(3) .5909(2) .2192(3) .0376(8) Uani d . 1 . . C
H1 .1001 .6230 .1981 .045 Uiso calc R 1 . . H
C2 .0589(3) .4998(3) .2175(3) .0551(11) Uani d . 1 . . C
H2 .0999 .4690 .1940 .066 Uiso calc R 1 . . H
C3 .0000 .4534(4) .2500 .0623(19) Uani d S 1 . . C
H3 .0000 .3901 .2500 .075 Uiso calc SR 1 . . H
C4 .0726(3) .9588(2) .2457(3) .0386(8) Uani d . 1 . . C
H4 .1242 .9268 .2424 .046 Uiso calc R 1 . . H
C5 .0745(3) 1.0503(3) .2459(3) .0495(10) Uani d . 1 . . C
H5 .1271 1.0811 .2433 .059 Uiso calc R 1 . . H
C6 .0000 1.0967(3) .2500 .0491(15) Uani d S 1 . . C
H6 .0000 1.1600 .2500 .059 Uiso calc SR 1 . . H
C7 .3310(3) .5734(2) .9725(3) .0376(8) Uani d . 1 . . C
H7 .3754 .6110 .9617 .045 Uiso calc R 1 . . H
C8 .3418(3) .4825(3) .9712(3) .0465(10) Uani d . 1 . . C
H8 .3933 .4576 .9602 .056 Uiso calc R 1 . . H
C9 .2766(3) .4282(3) .9860(3) .0502(10) Uani d . 1 . . C
H9 .2824 .3652 .9851 .060 Uiso calc R 1 . . H
C10 .2036(3) .4664(3) 1.0021(3) .0507(10) Uani d . 1 . . C
H10 .1583 .4299 1.0128 .061 Uiso calc R 1 . . H
C11 .1959(3) .5571(3) 1.0029(3) .0414(9) Uani d . 1 . . C
H11 .1447 .5831 1.0136 .050 Uiso calc R 1 . . H
loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
C C .0033 .0016 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
H H .0000 .0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
N N .0061 .0033 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
O O .0106 .0060 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
Cr Cr .3209 .6236 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
Hg Hg -2.3894 9.2266 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle_site_symmetry_1
_geom_angle_site_symmetry_3
_geom_angle
_geom_angle_publ_flag
N1 Hg1 N2 . . 180.0000(10) ?
N1 Hg1 O1 . . 97.01(6) ?
N2 Hg1 O1 . . 82.99(6) ?
N1 Hg1 O1 . 2 97.01(6) ?
N2 Hg1 O1 . 2 82.99(6) ?
O1 Hg1 O1 . 2 165.98(13) ?
N1 Hg1 O5 . 8_465 85.30(6) ?
N2 Hg1 O5 . 8_465 94.70(6) ?
O1 Hg1 O5 . 8_465 83.52(9) ?
O1 Hg1 O5 2 8_465 97.64(9) ?
N1 Hg1 O5 . 7_566 85.30(6) ?
N2 Hg1 O5 . 7_566 94.70(6) ?
O1 Hg1 O5 . 7_566 97.64(9) ?
O1 Hg1 O5 2 7_566 83.52(9) ?
O5 Hg1 O5 8_465 7_566 170.61(11) ?
N3 Hg2 N3 7_567 . 180.0000(10) ?
N3 Hg2 O3 7_567 2_556 86.97(9) ?
N3 Hg2 O3 . 2_556 93.03(9) ?
N3 Hg2 O3 7_567 8_566 93.03(9) ?
N3 Hg2 O3 . 8_566 86.97(9) ?
O3 Hg2 O3 2_556 8_566 180.0 ?
N3 Hg2 O7 7_567 7_567 97.87(10) ?
N3 Hg2 O7 . 7_567 82.13(10) ?
O3 Hg2 O7 2_556 7_567 82.10(8) ?
O3 Hg2 O7 8_566 7_567 97.90(8) ?
N3 Hg2 O7 7_567 . 82.13(10) ?
N3 Hg2 O7 . . 97.87(10) ?
O3 Hg2 O7 2_556 . 97.90(8) ?
O3 Hg2 O7 8_566 . 82.10(8) ?
O7 Hg2 O7 7_567 . 180.0000(10) ?
O2 Cr1 O3 . . 108.87(15) ?
O2 Cr1 O1 . . 110.71(15) ?
O3 Cr1 O1 . . 110.16(14) ?
O2 Cr1 O4 . . 110.83(13) ?
O3 Cr1 O4 . . 108.83(14) ?
O1 Cr1 O4 . . 107.41(14) ?
O6 Cr2 O5 . . 108.81(15) ?
O6 Cr2 O7 . . 110.00(15) ?
O5 Cr2 O7 . . 110.35(14) ?
O6 Cr2 O4 . . 110.80(13) ?
O5 Cr2 O4 . . 109.72(14) ?
O7 Cr2 O4 . . 107.15(14) ?
Cr1 O1 Hg1 . . 135.12(15) ?
Cr1 O3 Hg2 . 2_556 136.54(15) ?
Cr1 O4 Cr2 . . 138.62(17) y
Cr2 O5 Hg1 . 7_566 135.56(15) ?
Cr2 O7 Hg2 . . 126.34(15) ?
C1 N1 C1 2 . 119.8(4) ?
C1 N1 Hg1 2 . 120.1(2) ?
C1 N1 Hg1 . . 120.1(2) ?
C4 N2 C4 2 . 119.1(4) ?
C4 N2 Hg1 2 . 120.5(2) ?
C4 N2 Hg1 . . 120.5(2) ?
C7 N3 C11 . . 119.2(3) ?
C7 N3 Hg2 . . 121.0(2) ?
C11 N3 Hg2 . . 119.8(2) ?
N1 C1 C2 . . 121.2(4) ?
N1 C1 H1 . . 119.4 ?
C2 C1 H1 . . 119.4 ?
C1 C2 C3 . . 119.5(4) ?
C1 C2 H2 . . 120.3 ?
C3 C2 H2 . . 120.3 ?
C2 C3 C2 2 . 118.8(5) ?
C2 C3 H3 2 . 120.6 ?
C2 C3 H3 . . 120.6 ?
N2 C4 C5 . . 121.7(4) ?
N2 C4 H4 . . 119.2 ?
C5 C4 H4 . . 119.2 ?
C6 C5 C4 . . 119.4(4) ?
C6 C5 H5 . . 120.3 ?
C4 C5 H5 . . 120.3 ?
C5 C6 C5 2 . 118.8(5) ?
C5 C6 H6 2 . 120.6 ?
C5 C6 H6 . . 120.6 ?
N3 C7 C8 . . 121.8(3) ?
N3 C7 H7 . . 119.1 ?
C8 C7 H7 . . 119.1 ?
C7 C8 C9 . . 118.9(4) ?
C7 C8 H8 . . 120.6 ?
C9 C8 H8 . . 120.6 ?
C10 C9 C8 . . 119.0(4) ?
C10 C9 H9 . . 120.5 ?
C8 C9 H9 . . 120.5 ?
C11 C10 C9 . . 120.0(4) ?
C11 C10 H10 . . 120.0 ?
C9 C10 H10 . . 120.0 ?
N3 C11 C10 . . 121.1(4) ?
N3 C11 H11 . . 119.4 ?
C10 C11 H11 . . 119.4 ?
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_site_symmetry_2
_geom_bond_distance
_geom_bond_publ_flag
Hg1 N1 . 2.087(4) y
Hg1 N2 . 2.092(4) y
Hg1 O1 . 2.618(3) y
Hg1 O1 2 2.618(3) y
Hg1 O5 8_465 2.625(3) y
Hg1 O5 7_566 2.625(3) y
Hg2 N3 7_567 2.113(3) y
Hg2 N3 . 2.113(3) y
Hg2 O3 2_556 2.596(3) y
Hg2 O3 8_566 2.596(3) y
Hg2 O7 7_567 2.640(3) y
Hg2 O7 . 2.640(3) y
Cr1 O2 . 1.601(3) y
Cr1 O3 . 1.617(3) y
Cr1 O1 . 1.624(3) y
Cr1 O4 . 1.766(3) y
Cr1 Cr2 . 3.3075(7) y
Cr2 O6 . 1.604(3) y
Cr2 O5 . 1.615(3) y
Cr2 O7 . 1.621(3) y
Cr2 O4 . 1.769(3) y
O3 Hg2 2_556 2.596(3) ?
O5 Hg1 7_566 2.625(3) ?
N1 C1 2 1.332(4) ?
N1 C1 . 1.332(4) ?
N2 C4 2 1.334(4) ?
N2 C4 . 1.334(4) ?
N3 C7 . 1.337(4) ?
N3 C11 . 1.350(4) ?
C1 C2 . 1.367(5) ?
C1 H1 . .950 ?
C2 C3 . 1.369(5) ?
C2 H2 . .950 ?
C3 C2 2 1.369(5) ?
C3 H3 . .950 ?
C4 C5 . 1.375(5) ?
C4 H4 . .950 ?
C5 C6 . 1.370(5) ?
C5 H5 . .950 ?
C6 C5 2 1.370(5) ?
C6 H6 . .950 ?
C7 C8 . 1.376(5) ?
C7 H7 . .950 ?
C8 C9 . 1.379(6) ?
C8 H8 . .950 ?
C9 C10 . 1.369(6) ?
C9 H9 . .950 ?
C10 C11 . 1.368(5) ?
C10 H10 . .950 ?
C11 H11 . .950 ?
