Abstract
The thermal behaviour of the complexes CuAcm(NH 3) 3, CuAcm(NH 3) 2·2H 2O, 2 2 The compound is a dimer of the formula: [CuAcm(NH 3) 2(OH 2)] 2·2H 2O. CuAcm(NH 3)·H 2O and Cu 3Acm(OH) 4·3H 2O has been studied by TG and, DTA techniques in flowing air and nitrogen atmospheres as well as by IR spectroscopy. The complexes decompose in two steps: (a) dehydration and/or deammination and (b) pyrolytic decomposition to copper oxides and copper sulphides. The second step is accompanied by an increase in mass and a strong exothermic peak, attributed to the oxidation of copper sulphides to cupric sulphate. Obviously, this oxidation process does not take place in a nitrogen atmosphere.
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