title: Dynamics of a nanometer-sized uranyl cluster in solution.
abstract: A class of uranyl peroxide clusters was discovered before as nanometer-sized ions that form spontaneously in aqueous solutions. The uranyl(VI) cluster investigated here is approximately 2 nm in diameter, contains 24 uranyl moieties, and 12 pyrophosphate units. NMR spectroscopy shows that the ion has two distinct forms that interconvert in milliseconds to seconds depending on the temperature and the size of the counterions. P blue, O red, U yellow.
authors.affiliation: Department of Chemistry, University of California, Davis, 1 Shields Ave, Davis, CA 95616, USA.
authors.forename: Rene L
authors.initials: RL
authors.lastname: Johnson
authors.forename: C André
authors.initials: CA
authors.lastname: Ohlin
authors.forename: Kristi
authors.initials: K
authors.lastname: Pellegrini
authors.forename: Peter C
authors.initials: PC
authors.lastname: Burns
authors.forename: William H
authors.initials: WH
authors.lastname: Casey
keywords: NMR spectroscopy; actinides; environmental chemistry; geochemistry; kinetics