Volatility Studies of Metal Chelates. IV*Thermal Behaviour of Copper(II) Chelates of Aryl β-Diketones

Abstract

The thermal stability and volatility of the copper (II) chelates of 38 aryl β-diketones have been examined by combined thermogravimetry and differential thermal analysis. Volatility is characterized by fluorine substitution (in R and R' of RCOCH₂COR?), particularly in the alkyl (R) moiety of the β-diketone. When chlorine, bromine and methyl substituents are introduced into the aromatic ring (R'), there is a significant reduction in volatility. If R is CH₃, thermal stability is markedly affected, especially when R' is C₆F₅.