#------------------------------------------------------------------------------
#$Date: 2016-02-13 20:28:24 +0100 (Sat 13 de Feb de 2016) $
#$Revision: 176429 $
#$URL: svn://www.crystallography.net/cod/cif/7/22/29/7222931.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_7222931
loop_
_publ_author_name
'Weiss, A.'
_publ_section_title
;
 Die Kristallstruktur des Siliciumdiselenids
;
_journal_name_full
;
Zeitschrift fuer Naturforschung, Teil B. Anorganische Chemie, Organische 
Chemie (2,1947-32,1977)
;
_journal_page_first              483
_journal_page_last               484
_journal_volume                  7
_journal_year                    1952
_chemical_formula_sum            'Se2 Si'
_chemical_name_systematic        'Si Se2'
_space_group_IT_number           72
_symmetry_space_group_name_Hall  '-I 2 2c'
_symmetry_space_group_name_H-M   'I b a m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.03
_cell_length_b                   5.76
_cell_length_c                   9.76
_cell_volume                     338.992
_citation_journal_id_ASTM        ZENBAX
_cod_data_source_file            Weiss_ZENBAX_1952_1898.cif
_cod_data_source_block           Se2Si1
_cod_original_cell_volume        338.9922
_cod_original_formula_sum        'Se2 Si1'
_cod_database_code               7222931
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-x,-y,z
x,-y,-z+1/2
-x,y,-z+1/2
-x,-y,-z
x,y,-z
-x,y,z-1/2
x,-y,z-1/2
x+1/2,y+1/2,z+1/2
-x+1/2,-y+1/2,z+1/2
x+1/2,-y+1/2,-z+1
-x+1/2,y+1/2,-z+1
-x+1/2,-y+1/2,-z+1/2
x+1/2,y+1/2,-z+1/2
-x+1/2,y+1/2,z
x+1/2,-y+1/2,z
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
Se1 Se-2 0.121 0.202 0 1 0.0
Si1 Si+4 0 0 0.25 1 0.0
