#------------------------------------------------------------------------------
#$Date: 2016-02-13 21:28:24 +0200 (Sat, 13 Feb 2016) $
#$Revision: 176429 $
#$URL: svn://www.crystallography.net/cod/cif/4/03/18/4031806.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_4031806
loop_
_publ_author_name
'Seccombe, R.C.'
'Kennard, C.H.L.'
_publ_section_title
;
 The stereochemistry of organomercury compounds II. A redetermination of
 the structure of mercury(II) cyanide by neutron diffraction
;
_journal_name_full               'Journal of Organometallic Chemistry'
_journal_page_first              243
_journal_page_last               247
_journal_volume                  18
_journal_year                    1969
_chemical_formula_sum            'C2 Hg N2'
_chemical_name_systematic        'Hg (C N)2'
_space_group_IT_number           122
_symmetry_space_group_name_Hall  'I -4 2bw'
_symmetry_space_group_name_H-M   'I -4 2 d'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   9.643
_cell_length_b                   9.643
_cell_length_c                   8.88
_cell_volume                     825.729
_citation_journal_id_ASTM        JORCAI
_cod_data_source_file            Seccombe_JORCAI_1969_1670.cif
_cod_data_source_block           C2Hg1N2
_cod_original_cell_volume        825.7285
_cod_original_formula_sum        'C2 Hg1 N2'
_cod_database_code               4031806
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
y,-x,-z
-x,-y,z
-y,x,-z
x,-y+1/2,-z+1/4
-y+1/2,-x,z+3/4
-x,y+1/2,-z+1/4
y+1/2,x,z+3/4
x+1/2,y+1/2,z+1/2
y+1/2,-x+1/2,-z+1/2
-x+1/2,-y+1/2,z+1/2
-y+1/2,x+1/2,-z+1/2
x+1/2,-y+1,-z+3/4
-y+1,-x+1/2,z+5/4
-x+1/2,y+1,-z+3/4
y+1,x+1/2,z+5/4
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
Hg1 Hg+2 0.2117 0.25 0.125 1 0.0
C1 C+2 0.2026 0.0447 0.163 1 0.0
N1 N-3 0.2039 -0.0726 0.1805 1 0.0
