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10.1007/s10973-006-8123-z |
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| Authors: | Ma?a?Raji?? Linari? |
| Institution: | (1) Laboratory for Thermal Analysis, Brodarski Institute – Marine Research and Special Technology, Zagreb, Croatia, 10000, Av. V. Holjevca 20;(2) Laboratory for General and Inorganic Chemistry, Faculty of Science, Chemistry Department, University of Zagreb, Zagreb, Croatia, 10000, Horvatovac 102 A |
| Abstract: | This work presents preparation and thermal characterization of three novel organomercurials: Hg2(CF3COCHCOCF3)2-μ2-(CF3COCCOCF3)μ2(CF3C(OH)2CH2C(OH)2CF3) (I), Hg2(CF3COCHCOCF3)2-μ2-(CF3COCCOCF3) (II) and Hg2(CH3COCHCOCF3)2-μ2-(CH3COCCOCF3) (III) which means that they contain at least one direct mercury-to-carbon bond among the carbonyl groups of β-diketone molecules which are capable for chelating of metal ions. IR-spectra support the conclusion that mercury is most probably bound to the γ-carbon of fluorinated derivatives of acetylacetone and is not chelated through oxygen in any of the isolated compounds. The thermal decomposition of mercurated hexafluoro- and trifluoroacetylacetone in nitrogen occurs in a few steps. Each step was identified and studied by simultaneous DTA/TG analyzer. On the basis of dynamic heating experiments by TG applying Flynn-Wall method the activation energy for each of them was determined. |
| Keywords: | β -diketone Flynn– Wall kinetics mercurated hexafluoro- and trifluoroacetylacetone thermal characterization |
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