CRTA for the Thermoanalytical Screening of Volatile Compounds 2. The volatility of trifluoroacetylacetonates of Al,Cr and Zr studied by the method of quasi-equilibrium thermogravimetry

Quasi-equilibrium thermogravimetry (with sample holders specially calibrated for the vapour pressure) was used for thermoanalytical screening of volatile compounds. ‘p-T’ relationships (in the range 0.0006 to 0.11 at) were obtained for acetylacetonates and fluoroacetylacetonates of Al, Cr and Zr. The incorporation of the trifluoromethyl group into the acetylacetone ligand noticeably increases the volatility: the enthalpy of evaporation remains practically constant, but the evaporation entropy changes distinctly. This revised version was published online in July 2006 with corrections to the Cover Date.