LaOI Wyckoff R W G Crystal Structures 1 (1963) 294-296 Second edition. Interscience Publishers, New York, New York Note: tetragonal PbFCl structure _database_code_amcsd 0011850 4.144 4.144 9.126 90 90 90 P4/nmm atom x y z La 0 .5 .135 O 0 0 0 I 0 .5 .660