CHEMILUMINESCENCE IN THE REACTION OF THE RU-II TRISBIPYRIDYL COMPLEX WITH DIMETHYLDIOXIRANE

The reaction of dimethyldioxirane (1) with the Ru-II trisbipyridyl com plex accompanied by chemiluminescence (CL) was studied. It is establis hed that the intensity of CL and the rate of its decay increase propor tionally with the concentration of Ru-II. The bimolecular rate constan t (k(2)) of the reaction of 1 with Ru-II was determined. The activatio n parameters (E-a and logA) for this reaction were calculated from the temperature dependence of k(2) The excitation yield of Ru-II (eta*(R u)) was estimated. The quenching of Ru-II by dioxirane was studied, a nd the bimolecular quenching constant and the coefficient of excitatio n regeneration were determined. It was suggested that the catalysis of the decomposition of 1 and the excitation of Ru-II occur via a mechan ism of chemically initiated electron exchange.