HoOCl 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 0011847 3.893 3.893 6.602 90 90 90 P4/nmm atom x y z Ho 0 .5 .17 O 0 0 0 Cl 0 .5 .63