Formation and thermodynamics of gaseous germanium and tin vanadates: a mass spectrometric and quantum chemical study

摘要

The stabilities of gaseous germanium and tin vanadates were confirmed by high temperature mass spectrometry, and its structures were determined by quantum chemical calculations. A number of gas-phase reactions involving these gaseous salts were studied. On the basis of the equilibrium constants, the standard formation enthalpies of gaseous GeV2O6 (-1520 +/- 42 kJ mol(-1)) and SnV2O6 (-1520 +/- 43 kJ mol(-1)) were determined at a temperature of 298 K.