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#$Date: 2013-04-04 14:36:45 +0100 (Thu, 04 Apr 2013) $
#$Revision: 79219 $
#$URL: svn://www.crystallography.net/cod/cif/1/10/10/1101039.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_1101039
_journal_name_full                 'Zeitschrift f\"ur Kristallographie'
_journal_volume                    92
_journal_year                      1935
_journal_page_first                344
_journal_page_last                 354
_publ_section_title
;
The Structure of Strontium and Barium Peroxides, Sr O~2~ and Ba O~2~
;
loop_
_publ_author_name
  'Bernal, J. D.'
  'Djatlowa, E.'
  'Kasarnowsky, I.'
  'Reichstein, S.'
  'Ward, A. G.'
_chemical_name_systematic          'Strontium peroxide'
_chemical_formula_structural       'Sr O2'
_chemical_formula_sum              'O2 Sr'
_symmetry_space_group_name_H-M     'I 4/m m m'
_symmetry_Int_Tables_number        139
_symmetry_cell_setting             tetragonal
_cod_depositor_comments
;
The _journal_name_full tag was restored consulting three 
souces containing references to the original paper: 

1. Structure Types. Part 10: Space Groups (140) I4/mcm -- (136) P42/mnm.
Volume 43A10 2011. Editors: P. Villars, K. Cenzual.
ISBN: 978-3-642-19661-4-978-3-642-19662-1. Found via google books.

2. 24 Bernal JD, Djatlowa E, Kasarnowsky I, Reichstein S, Ward AG
The structure of Strontium and Barium Peroxides Sr0(2) and Ba0(2)
ZEITSCHRIFT FUR KRISTALLOGRAPHIE. 1935 DEC; 92 (5/6): 344-354.
Online publication list of Bernal J. D.
http://garfield.library.upenn.edu/histcomp/franklin-bernal-watson-crick/tg/3.html

3. Proceedings of the Chemical Society.
J. Chem. Soc., 1936, A001-A088
DOI: 10.1039/JR93600BA001 
;
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'
_cell_length_a                     3.55
_cell_length_b                     3.55
_cell_length_c                     6.55
_cell_angle_alpha                  90
_cell_angle_beta                   90
_cell_angle_gamma                  90
_cell_volume                       82.5
_cell_formula_units_Z              2
_exptl_crystal_density_meas        4.45
loop_
_atom_type_symbol
_atom_type_oxidation_number
  Sr2+   2.000
  O1-   -1.000
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
_cod_database_code 1101039