Single crystal to single crystal transformation and hydrogen-atom transfer upon oxidation of a cerium coordination compound

Ursula J Williams; Brian D Mahoney; Andrew J Lewis; Patrick T DeGregorio; Patrick J Carroll; Eric J Schelter

doi:10.1021/ic4001973

Single crystal to single crystal transformation and hydrogen-atom transfer upon oxidation of a cerium coordination compound

Inorg Chem. 2013 Apr 15;52(8):4142-4. doi: 10.1021/ic4001973. Epub 2013 Mar 27.

Authors

Ursula J Williams¹, Brian D Mahoney, Andrew J Lewis, Patrick T DeGregorio, Patrick J Carroll, Eric J Schelter

Affiliation

¹ P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States.

PMID: 23534677
DOI: 10.1021/ic4001973

Abstract

Trivalent and tetravalent cerium compounds of the octamethyltetraazaannulene (H2omtaa) ligand have been synthesized. Electrochemical analysis shows a strong thermodynamic preference for the formal cerium(IV) oxidation state. Oxidation of the cerium(III) congener Ce(Homtaa)(omtaa) occurs by hydrogen-atom transfer that includes a single crystal to single crystal transformation upon exposure to an ambient atmosphere.