Journal of Solid State Chemistry

Etude EXAFS de la formation d'oxyde Nb 2 O 5 par hydrolyse-condensation de chloroethoxyde de niobium

MT Vandenborre, B Poumellec, J Livage

Index: Vandenborre, Marie Therese; Poumellec, Bertrand; Livage, Jacques Journal of Solid State Chemistry, 1989 , vol. 83, p. 105 - 114

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Citation Number: 4

Abstract

Abstract The sol-gel synthesis of Nb 2 O 5 was followed by X-ray absorption experiments at the niobium K edge. The molecular precursor NbCl 2 (OEt) 3 was a chloro-alkoxide obtained from the reaction of NbCl 5 with EtOH. Cl ligands were removed upon hydrolysis and condensation, leading to polymeric species formed mainly of corner-sharing NbO 6 octhaedra. Some edge-sharing species were also observed and the short-range order ...