Colligation reactions between a nickel(II) macrocycle and alkyl radicals
Abstract
The bimolecular reaction between RRSS-NiL2+(where L = 1,4,8,11-tetraazacyclotetradecane) and alkyl radicals (R˙) forms the organometallic species RNiL(H2O)2+, with rate constants that vary in the order Me ≫ primary ≫ secondary in aqueous perchloric acid at 25 °C, reflecting the decreasing strength of the nickel–carbon bond.