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The quest for single-source precursors for BaTiO3 and SrTiO3

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Abstract

The reactions between titanium alkoxides Ti(OR)4 (R=Et,iPr) and strontium β-diketonates Sr(β-dik)2 (β-dik=thd, acac) were investigated. The various Sr−Ti species, Sr2Ti2(β-dik)4(OR)8, have a 1∶1 Sr∶Ti stoichiometry and were characterized by elemental analysis, FT-IR and by single-crystal X-ray diffraction for Sr2Ti2(μ3-OiPr)2(μ-OiPr)4OiPr)2(thd)4(1). The hydrolysis-polycondensation reactions of the various species were investigated and the resulting powders analyzed by light scattering and XRD. While acetone was found to have little influence on the hydrolysis reactions of the Sr−Ti species, polycondensation of Ti(OiPr)4 in neat acetone offers a trinuclear enolate Ti(μ3-O)2(OCMe=CH2)3(OiPr)5(iPrOH)(4). Comparisons between the Ba−Ti and Sr−Ti systems are given.

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Authors and Affiliations

  1. Laboratoire de Chimie Moléculaire, URA-CNRS, Université de Nice-Sophia Antipolis, Parc Valrose, 06 108, Nice Cédex, France

    Liliane G. Hubert-Pfalzgraf, Stephane Daniele & Jean Manuel Decams

  2. Laboratoire de Chimie des Métaux de Transition, URA-CNRS, 4 place Jussieu, 75 230, Paris Cédex, France

    Jacqueline Vaissermann

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  1. Liliane G. Hubert-Pfalzgraf
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  2. Stephane Daniele
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  3. Jean Manuel Decams
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  4. Jacqueline Vaissermann
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Hubert-Pfalzgraf, L.G., Daniele, S., Decams, J.M. et al. The quest for single-source precursors for BaTiO3 and SrTiO3 . J Sol-Gel Sci Technol 8, 49–53 (1997). https://doi.org/10.1007/BF02436816

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