Cs2O2 Wyckoff R W G Crystal Structures 1 (1963) 85-237 Second edition. Interscience Publishers, New York, New York Cesium peroxide _database_code_amcsd 0011669 4.322 7.517 6.430 90 90 90 Immm atom x y z Cs 0 .25 0 O 0 0 .38