ISSN:
1573-4846
Schlagwort(e):
precursor chemistry
;
ferroelectrics
;
strontium
;
barium
;
titanium
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Chemie und Pharmazie
Notizen:
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.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1023/A:1026478400813
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