#------------------------------------------------------------------------------
#$Date: 2017-10-16 01:16:12 +0300 (Mon, 16 Oct 2017) $
#$Revision: 202026 $
#$URL: file:///home/coder/svn-repositories/cod/cif/1/10/00/1100026.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_1100026
loop_
_publ_author_name
'Bernal, J D'
'Djatlowa, E'
'Kasarnowsky, I'
'Reichstein, S'
'Ward, A G'
_publ_section_title
;
The Structure of Strontium and Barium Peroxides, Sr O~2~ and Ba O~2~
;
_journal_name_full
;
Zeitschrift fuer Kristallographie, Kristallgeometrie, Kristallphysik,
Kristallchemie (-144,1977)
;
_journal_page_first              344
_journal_page_last               354
_journal_volume                  92
_journal_year                    1935
_chemical_formula_structural     'Sr O2'
_chemical_formula_sum            'O2 Sr'
_chemical_name_systematic        'Strontium peroxide'
_space_group_IT_number           139
_symmetry_cell_setting           tetragonal
_symmetry_Int_Tables_number      139
_symmetry_space_group_name_Hall  '-I 4 2'
_symmetry_space_group_name_H-M   'I 4/m m m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   3.55
_cell_length_b                   3.55
_cell_length_c                   6.55
_cell_volume                     82.5
_exptl_crystal_density_meas      4.45
_cod_duplicate_entry             1010114
_cod_database_code               1100026
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-x,-y,z
-x,y,z
x,-y,z
-y,x,z
y,-x,z
y,x,z
-y,-x,z
-x,-y,-z
x,y,-z
x,-y,-z
-x,y,-z
y,-x,-z
-y,x,-z
-y,-x,-z
y,x,-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
1/2+x,1/2-y,1/2+z
1/2-y,1/2+x,1/2+z
1/2+y,1/2-x,1/2+z
1/2+y,1/2+x,1/2+z
1/2-y,1/2-x,1/2+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
1/2-x,1/2+y,1/2-z
1/2+y,1/2-x,1/2-z
1/2-y,1/2+x,1/2-z
1/2-y,1/2-x,1/2-z
1/2+y,1/2+x,1/2-z
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_symmetry_multiplicity
_atom_site_Wyckoff_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_attached_hydrogens
_atom_site_calc_flag
Sr1 Sr2+ 2 a 0. 0. 0. 1. 0 d
O1 O1- 4 e 0. 0. 0.397 1. 0 d
loop_
_atom_type_symbol
_atom_type_oxidation_number
Sr2+ 2.000
O1- -1.000
loop_
_cod_related_entry_id
_cod_related_entry_database
_cod_related_entry_code
1 ChemSpider 14123
2 AMCSD 0017044