Cationic chromium (III) alkyls as olefin polymerization catalysts

Article abstract of DOI:10.1021/ja00225a053

The authors describe a number of cationic chromium(III) alkyls, some of which are catalysts for the polymerization of ethylene and propene. Experimental results indicate that cationic metal sites may be responsible for the catalysis. The positive charge of such complexes may be crucial for binding of the electron-rich olefin to a metal center that has little propensity for back-bonding.