THE THERMAL PROPERTIES OF SOME METAL COMPLEXES OF D IETHYLDITHIOCARBAMIC ACID NEW VOLATILE METAL CHELATES

The cobalt(lI), nickel(II), copper(II), zinc(I1), cadmium(II), silver(I) and mer-cury(II) complexes of diethyldithiocarbamic a id were prepared and their thermal properties determined by TG, DTA, and high temperature flectance spectroscopy. It was found that the copper(II), nickel(II), and zinc(II) chelates were completely volatile and thus represent a new class of volatile metal chelates. Vapor pressure measurements were made on four of the metal complexes; heats of vaporization ranged from 9.3 _--b 0.2 kcal/mole for NalCo(DDC)3] to 24.2 _ 0.6 kcal/mole for Zn(DDC)2. Diethyldithiocarbamic a id (DDC), readily forms complexes wit