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DOI : 10.1016/j.solidstatesciences.2010.12.041

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Solid State Sciences 13 (2011) 665-670

Synthesis and thermal decomposition of a novel zirconium acetato-propionate cluster: [Zr12]

Sarah Petit 1, Stéphanie Morlens 2, Zeming Yu 1, 3, Dominique Luneau 4, Guillaume Pilet 4, Jean-Louis Soubeyroux 1, 5, Philippe Odier 1

(2011)

This work reports a novel Zirconium acetato-propionate complex herein called [Zr12] obtained by reaction of zirconium acetylacetonate Zr(acac)4 with propionic acid. The molecular structure has been determined by X-ray diffraction on single crystals and proposed to be [Zr12(m3-O)16(CH3CH2CO2)12(CH3CO2)8(m2- CH3CH2CO2)4]. This cluster involves oxo/hydroxo bonds in the direct surrounding of the metallic center. The decomposition of [Zr12] has been studied by thermal analysis and compared to Zr(acac)4. Its temperature of decomposition is much lower than for acetylacetonate derivative. In consequence, the formation of ZrO2 is easier from [Zr12] than from Zr(acac)4. This phenomenon highlights the influence of the molecular structure on the process of decomposition. The local surrounding of Zr in [Zr12] and in ZrO2 are very close, while it is markedly different in Zr(acac)4.This difference of environment of the metallic ions is at the origin of the huge difference of thermal behavior of both compounds.

1 :	Institut Néel (NEEL)
	CNRS : UPR2940 – Université Joseph Fourier - Grenoble I – Institut National Polytechnique de Grenoble (INPG)
2 :	Saint-Gobain Recherche (SGR)
	SAINT-GOBAIN
3 :	Northwest Institute for Nonferrous Metal Research (NIN)
	chine
4 :	Laboratoire des Multimatériaux et Interfaces (LMI)
	CNRS : UMR5615 – Université Claude Bernard - Lyon I
5 :	Consortium de Recherches pour l'Emergence des Technologies Avancées (CRETA)
	CNRS : UPS2070

Équipe de recherche : Supra

Domaine

:

Chimie/Matériaux

Mots Clés : Propionates – Chemical solution deposition – La2Zr2O7 – Zirconium cluster MOD

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Contributeur : Jean-Louis Soubeyroux <>

Soumis le : Vendredi 6 Juillet 2012, 09:58:23

Dernière modification le : Lundi 9 Juillet 2012, 15:11:13