TITLE

Structures of plutonium coordination compounds: A review of past work, recent single crystal x-ray diffraction results, and what we’re learning about plutonium coordination chemistry

AUTHOR(S)
Neu, M. P.; Matonic, J. H.; Smith, D. M.; Scott, B. L.
PUB. DATE
July 2000
SOURCE
AIP Conference Proceedings;2000, Vol. 532 Issue 1, p381
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The compounds we have isolated and characterized include plutonium(III) and plutonium(IV) bound by ligands with a range of donor types and denticity (halide, phosphine oxide, hydroxamate, amine, sulfide) in a variety of coordination geometries. For example, we have obtained the first X-ray structure of Pu(III) complexed by a soft donor ligand. Using a “one pot” synthesis beginning with Pu metal strips and iodine in acetonitrile and adding trithiacyclononane we isolated the complex, PuI[sub 3](9S[sub 3])(MeCN)[sub 2] (Figure 1). On the other end of the coordination chemistry spectrum, we have obtained the first single crystal structure of the Pu(IV) hexachloro anion (Figure 2). Although this species has been used in plutonium purification via anion exchange chromatography for decades, the bond distances and exact structure were not known. We have also characterized the first plutonium-biomolecule complex, Pu(IV) bound by the siderophore desferrioxamine E.In this presentation we will review the preparation, structures, and importance of previously known coordination compounds and of those we have recently isolated. We will show the coordination chemistry of plutonium is rich and varied, well worth additional exploration. © 2000 American Institute of Physics.
ACCESSION #
5663313

 

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