Collect. Czech. Chem. Commun. 1987, 52, 1480-1487

The formation of fluorooxogermanates in alkali metal nitrate melts

Milan Drátovskýa and Marcela Uchytilováb

a Department of Inorganic Chemistry, Charles University, 128 40 Prague 2
b Institute of Inorganic Chemistry, Czechoslovak Academy of Sciences, 250 68 Řež


Attempts were made to isolate fluorooxogermanates, whose formation in nitrate melts was indicated potentiometrically. The stability of fluorooxogermanates in nitrate melts depends on the melt temperature and on the effect of the cation. In addition to the already known compound, K4[Ge2F10O], a new compound, Na2[GeF4O], was also obtained from nitrate melts. In addition, conditions were found for the formation of both the tetragonal and of the hexagonal modification of GeO2 in nitrate melts.