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Synthetic strategy to access organometallic precursors for oxide-ceramic materials

Łukasz John ,  Józef Utko ,  Lucjan B. Jerzykiewicz ,  Piotr Sobota 

University of Wrocław, Faculty of Chemistry, Joliot-Curie 14, Wrocław 50-383, Poland

Abstract

We report here new synthesis method of organometallic-aryloxides. In the first step we have obtained barium complex with 2,3-dihydro-2,2-dimethyl-benzofuran-7-ol (ddbfoH) ligand. In the next step barium aryloxide can be easily modified by organometallic species such as MMe3 (M = Al, Ga, In) and ZnEt2, giving compounds which general formulas are: [Ba{(µ-ddbfo)2MMe2}2] and [Ba{(µ-ddbfo)2ZnEt}2].[1] The crystal structures for these complexes were determined. The advantage of this technique is that the desired stoichiometry may be achieved on the molecular level by selective formation of the binary metallic alkoxide and the resulting molecule subsequently thermolyzed yield oxide product. The thermal behavior of obtained precursors was studied by TGA analysis over a range of 25 - 1100 oC under a dinitrogen atmosphere. The TGA plot shows that bimetallic precursors undergo thermal decomposition to appropriate oxide products BaZn2O3 and BaM2O4 (M = Al, Ga, In), which were determined by powder X-ray diffraction and SEM techniques.

[1] Utko, J.; Szafert, S.; Jerzykiewicz, L.B.; Sobota, P. Inorg. Chem. 2005, 44, 5194

 

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Related papers

Presentation: Poster at E-MRS Fall Meeting 2006, Symposium D, by Łukasz John
See On-line Journal of E-MRS Fall Meeting 2006

Submitted: 2006-05-11 08:50
Revised:   2009-06-07 00:44