SnO Wyckoff R W G Crystal Structures 1 (1963) 85-237 Second edition. Interscience Publishers, New York, New York _database_code_amcsd 0011634 3.802 3.802 4.836 90 90 90 P4/nmm atom x y z Sn 0 .5 .2385 O 0 0 0