Thermodynamic study of a series lithium β-diketonates

Thermal behaviour of a series of lithium beta-diketonates: Li(dpm) (dpm=dipivaloylmethanate (2,2,6,6-tetramethylheptane-3,5- dionate)), Li(pta) (pta=pivaloyltrifluoracetonate (2,2-dimethyl-6,6,6-trifluoro-3,5-hexanedionate)), Li(tfa) (tfa=trifluoracetylacetonate (1,1,1-trifluoro-2,4-pentandionate)),...

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Published inJournal of thermal analysis and calorimetry Vol. 86; no. 2; pp. 537 - 539
Main Authors Filatov, E. S., Sysoev, S. V., Zelenina, Ludmila N., Chusova, Tamara P., Logvinenko, V. A., Semyannikov, P. P., Igumenov, I. K.
Format Journal Article
LanguageEnglish
Published 01.11.2006
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Summary:Thermal behaviour of a series of lithium beta-diketonates: Li(dpm) (dpm=dipivaloylmethanate (2,2,6,6-tetramethylheptane-3,5- dionate)), Li(pta) (pta=pivaloyltrifluoracetonate (2,2-dimethyl-6,6,6-trifluoro-3,5-hexanedionate)), Li(tfa) (tfa=trifluoracetylacetonate (1,1,1-trifluoro-2,4-pentandionate)), Li(hfa) (hfa=hexafluoracetylacetonate (1,1,1,5,5,5-hexafluoro-2,4-pentandionate)) has been investigated. Gas phase composition of these complexes has been established. Temperature dependences of vapor pressure of lithium compounds were obtained by static and dynamic methods, and thermodynamic parameters were calculated. Dependence of compound volatility on ligand structure is shown. For Li(dpm) detailed investigation has been done by differential scanning calorimetry (DSC).
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ISSN:1388-6150
1572-8943
DOI:10.1007/s10973-006-7470-0