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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,i Pr) 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)4 (OiPr)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
  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 . Journal of Sol-Gel Science and Technology 8, 49–53 (1997). https://doi.org/10.1023/A:1026478400813

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