Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 139, Issue 11, Pages 3970-3973Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.7b00706
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Funding
- U.S. Department of Energy (DOE), Office of Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division, Heavy Element Chemistry Program [DE-SC0004739, DE-AC52-06NA25396]
- Office of Science, Office of Workforce Development for Teachers and Scientists, Graduate Student Research (SCGSR) Program [DE-AC05-06OR23100]
- U.S. National Science Foundation [CHE-1464828]
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1464828] Funding Source: National Science Foundation
- U.S. Department of Energy (DOE) [DE-SC0004739] Funding Source: U.S. Department of Energy (DOE)
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Over 70 years of chemical investigations have shown that,plutonium exhibits some of the most complicated chemistry in the periodic table. Six Pu oxidation states have been unambiguously confirmed (0 and +3 to +7), and four different oxidation states can exist simultaneously in solution. We report a new formal oxidation state for plutonium, namely Pu2+ in [K(2.2.2-cryptand)][(PuCp3)-Cp-II ''], Cp '' = C5H3(SiMe3)(2). The synthetic precursor (PuCp3)-Cp-III '' is also reported, comprising the first structural characterization of a Pu-C bond. Absorption spectroscopy and DFT calculations indicate that the Pu2+ ion has predominantly a 5f(6) electron configuration with some 6d mixing.
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