Reactions of sigma-bonded organochromium(III)complexes

Three projects were carried out, each dealing with the kinetics and mechanism of reactions of sigma-bonded organochromium(III) complexes of the form (H$sub 2$O)$sub 5$CrR$sup 2+$. Part I describes the kinetics of the reaction of dichloromethylchromium(III) ion with chromium(II) ion in aqueous acid. Part II deals with the radioexchange of 4-pyridinomethylchromium(III) ion with $sup 51$Cr$sup 2+$ and the kinetics of formation of the organochromium species at 55$sup 0$ in 1 M H$sup +$. Part III deals with the reactions of Hg$sup 2+$ and CH$sub 3$Hg$sup +$ with a series of (H$sub 2$O)$sub 5$CrR$sup 2+$ complexes, in which R is an aliphatic alkyl group, a haloalkyl group, or an aralkyl group. (LK