Non‐isothermal kinetics of the decomposition reaction of cluster [Ag₃WS₃Br](PPh₃)₃ and [Cu₃WS₃Br](PPh₃)₃

Abstract

Abstract The thermal behaviors of clusters [Ag 3 WS 3 Br](PPh 3 ) 3 and [Cu 3 WS 3 Br](PPh 3 ) 3 (PPh 3 =triphenyl phosphine) in a nitrogen atmosphere were studied under the non‐isothermal conditions by simultaneous TG‐DTG‐DSC and EDS techniques. The results showed that the evolution of PPh 3 generally proceeded before the release of the other moiety in one or two step‐mode. The mechanisms, the kinetic and the thermodynamic parameters for decomposition of PPh 3 of both clusters were determined and calculated by jointly using several methods, which showed that its evolution was controlled by Avrami‐Erofeev equation. The results also showed that there was no new stable phase composed of W‐Ag(Cu)‐S‐Br after release of organic moiety PPh 3 and that CVD method was not applicable to their further processing.