#------------------------------------------------------------------------------
#$Date: 2016-02-13 21:28:24 +0200 (Sat, 13 Feb 2016) $
#$Revision: 176429 $
#$URL: svn://www.crystallography.net/cod/cif/1/53/99/1539934.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_1539934
loop_
_publ_author_name
'Weiss, A.'
_publ_section_title
;
 Zur Kenntnis der faserigen Siliciumdioxyd-Modifikation
;
_journal_name_full
'Zeitschrift fuer Anorganische und Allgemeine Chemie'
_journal_page_first              95
_journal_page_last               112
_journal_volume                  276
_journal_year                    1954
_chemical_formula_sum            'O2 Si'
_chemical_name_systematic        'Si O2'
_space_group_IT_number           72
_symmetry_space_group_name_Hall  '-I 2 2c (y,z,x)'
_symmetry_space_group_name_H-M   'I b a m (b,c,a)'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   4.72
_cell_length_b                   5.16
_cell_length_c                   8.36
_cell_volume                     203.609
_citation_journal_id_ASTM        ZAACAB
_cod_data_source_file            Weiss_ZAACAB_1954_859.cif
_cod_data_source_block           O2Si1
_cod_original_cell_volume        203.6095
_cod_original_sg_symbol_H-M      'I c m a'
_cod_original_formula_sum        'O2 Si1'
_cod_database_code               1539934
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-x,y,-z
-x,-y+1/2,z
x,-y+1/2,-z
-x,-y,-z
x,-y,z
x,y-1/2,-z
-x,y-1/2,z
x+1/2,y+1/2,z+1/2
-x+1/2,y+1/2,-z+1/2
-x+1/2,-y+1,z+1/2
x+1/2,-y+1,-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,-z+1/2
-x+1/2,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
Si1 Si+4 0 0.25 0 1 0.0
O1 O-2 0.209 0 0.11 1 0.0
