title: Tripling of the unit cell volume of the non-centrosymmetric AlPO4-SOD after dehydration: a structural study of a reversible process.
abstract: The structure of AlPO4-SOD, a microporous aluminophosphate synthesized in a quasi-nonaqueous system using dimethylformamide as template and solvent, was previously reported. Then, various solid state nuclear magnetic resonance techniques applied on the dehydrated compound at 200 degrees C were performed and suggested a rearrangement of one-third of the template molecules inside the sodalite cages and a tripling of the unit cell parameter c. We present here the structure determined from molecular modeling and Rietveld analysis on synchrotron data of AlPO4-SOD dehydrated under vacuum at 100 degrees C together with some solid state NMR experiments of the rehydrated product.
authors.affiliation: Laboratoire de Matériaux à Porosité Contrôlée, UMR 7016, ENSCMu, Université de Haute Alsace, 3 rue Alfred Werner, 68093 Mulhouse Cedex, France. Jean-Louis.PAILLAUD@uha.fr
authors.forename: Jean-Louis
authors.initials: JL
authors.lastname: Paillaud
authors.forename: Claire
authors.initials: C
authors.lastname: Marichal
authors.forename: Mélanie
authors.initials: M
authors.lastname: Roux
authors.forename: Christian
authors.initials: C
authors.lastname: Baerlocher
authors.forename: Jean Michel
authors.initials: JM
authors.lastname: Chézeau