High Activity of Binuclear Cobalt(II) Complex for Ethylene Evolution from 1-AminocycIopropane-1-carboxylic Acid in the Presence of Hydrogen Peroxide

Abstract

Abstract The binuclear Co(II) and Mn(II) complexes with H5(HXTA). where H5(HXTA) repre­sents N,N′-(2-hydroxy-5-methyl-1,3-xylylene)bis(N-carboxymethylglycine), induced a strong ethylene evolution from 1-aminocyclopropane-l-carboxylic acid (ACC) in the presence of hydrogen peroxide, whereas activities of the corresponding Fe(III), Ni(II), and V(III) com­plexes were found negligible. Based on spectroscopic results and mass-spectral data it is proposed that a peroxide adduct of binuclear Co(II) (and Mn(II)) complex with η1-coordina­tion mode interacts with ACC, which is chelated to a binuclear cobalt complex leading to facile oxidative degradation of ACC and to evolution of ethylene.