F4 Fe Rb Moron M, Bulou A, Pique C, Fourquet J Journal of Physics: Condensed Matter 2 (1990) 8269-8275 Structural phase transitions in Rb Fe F4: I.Powder and single crystal X-ray diffraction study of the room temperature phase _cod_database_code 1000439 _database_code_amcsd 0013260 7.6651 7.6316 6.2789 90 90 90 Pmab atom x y z Fe1 0 0 0 Rb1 .25 .2824 .5136 F1 0 .25 -.0711 F2 .25 -.0093 -.0630 F3 .0410 .0497 .2889