B F4 Rb Hoard J, Blair V Journal of the American Chemical Society 57 (1935) 1985-1988 The Crystal Structures of Rubidium and Ammonium Fluoborates _cod_database_code 1010094 _database_code_amcsd 0017027 9.07 5.6 7.23 90 90 90 Pnma atom x y z Rb1 .315 .25 .335 B1 .932 .25 .696 F1 .069 .25 .597 F2 .813 .25 .567 F3 .923 .043 .81