ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Determination of the Enthalpy of Fusion of K₂NbF₇ and K₃NbF₈

L. Kosa, I. Macková, and M. Chrenková

Institute of Inorganic Chemistry, Slovak Academy of Sciences, SK-845 36 Bratislava

E-mail: uachkosa@savba.sk

Received: 27 December 2002

Abstract: On the basis of the areas of the fusion and crystallization peaks of K₂NbF₇ and K₃NbF₈ determined using the DSC mode of the high-temperature calorimeter (SETARAM 1800 K), and the temperature dependence of the calorimetric method sensitivity, the values of the enthalpy of fusion of K2NbF7 at equilibrium temperature of fusion 1008 K: Δ_fusH_m(K₂NbF₇) = (38 ± 1) kJ mol⁻¹ and the enthalpy of fusion of K₃NbF₈ at equilibrium temperature of fusion 1043 K: Δ_fusH_m(K3NbF8) = (57 ± 2) kJ mol⁻¹ have been determined.

Full paper in Portable Document Format: 575a301.pdf

Chemical Papers 57 (5) 301–303 (2003)