F6 Pa Rb Burns J, Levy H, Keller O Acta Crystallographica B24 (1968) 1675-1680 The crystal structure of rubidium hexafluoroprotactinate Rb Pa F6 _cod_database_code 1008938 _database_code_amcsd 0016802 8.0483 12.025 5.8608 90 90 90 Cmma atom x y z Rb1 0 .25 .4532 Pa1 .25 .25 0 F1 0 .4294 .1459 F2 .3059 .3796 .2476