language: en

Structural and Dynamic Approaches of Molten Salts by High Temperature Spectroscopies

C. Bessada, V. Lacassagne, D. Massiot, P. Florian, J.-P. Coutures, E. Robert^, andB. Gilbert^
CNRS-CRMHT,
ID AV. de la Recherche Sciendfique, 54071 Orleans Cedex 2 - France
Laboratoire de Chimie Analydque, University de Liege,
B-4000, Belgium
Z. Naturforsch. 54a, 162-166 (1999);

[received November 27, 1998]

The combination of ^'A! NMR expriments and Molecular Dynamics simulation confirms the existence of penta-coordinated Aluminium in several molten aluminium oxides. In the case of fluoroaluminate molten salts, NMR and Raman spectroscopies provide complementary approaches leading to a structural description in term of AI F 4 , AIF5" and AlFfi species.

Key words: ^^Al High Temperature NMR; Oxides; NaF-AlF3.

1. Introduction