期刊
COORDINATION CHEMISTRY REVIEWS
卷 257, 期 2, 页码 394-406出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ccr.2012.04.029
关键词
f-Elements; Actinides; Covalency; Spectroscopy
资金
- Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Research, U.S. Department of Energy
The presence of covalency in complexes of the 4f and 5f elements has been a source of intense research and controversy. In addition to academic interest in this debate, there is an industrial motivation for better understanding of bonding in f-element complexes due to the need to separate trivalent trans-plutonium elements from trivalent lanthanide fission products in advanced nuclear fuel cycles. This review discusses the key evidence for covalency in f-element bonds derived from structural, spectroscopic and theoretical studies of some selected classes of molecules, including octahedral hexahalides, linear actinyl and organometallic sandwich complexes. This evidence is supplemented by a discussion of covalency, including the possibility of both overlap and near-degeneracy driven covalency and the need to quantify their relative contributions in actinide metal-ligand bonds. (C) 2012 Elsevier B.V. All rights reserved.
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