#------------------------------------------------------------------------------
#$Date: 2013-04-29 23:51:51 +0300 (Mon, 29 Apr 2013) $
#$Revision: 82717 $
#$URL: file:///home/coder/svn-repositories/cod/cif/1/50/97/1509714.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_1509714
loop_
_publ_author_name
'Imamov, R.M.'
'Pinsker, Z.G.'
'Ching-Liang, C.'
'Lapidus, E.L.'
_publ_section_title
;
 Determination of the crystal structure of the low-temperature phase
 alpha-Ag2 Se
;
_journal_name_full               Kristallografiya
_journal_page_first              275
_journal_page_last               283
_journal_volume                  10
_journal_year                    1965
_chemical_formula_sum            'Ag2 Se'
_chemical_name_systematic        'Ag2 Se'
_space_group_IT_number           17
_symmetry_space_group_name_Hall  'P 2c 2'
_symmetry_space_group_name_H-M   'P 2 2 21'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.05
_cell_length_b                   7.85
_cell_length_c                   4.33
_cell_volume                     239.633
_citation_journal_id_ASTM        KRISAJ
_[local]_cod_data_source_file    silver2-3_185.cif
_[local]_cod_data_source_block   Ag2Se1
_[local]_cod_chemical_formula_sum_orig 'Ag2 Se1'
_cod_database_code               1509714
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-x,-y,z+1/2
x,-y,-z
-x,y,-z+1/2
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
Ag2 Ag+1 0.393 0 0 1 0.0
Ag3 Ag+1 0.378 0.5 0 1 0.0
Ag1 Ag+1 0.121 0.225 0.022 1 0.0
Se1 Se-2 0.298 0.275 0.522 1 0.0