Justin Walensky, University of Missouri), and X-ray Absorption spectroscopic measurements (Dr. Laura Gagliardi, University of Minnesota Prof. Matthew Shores, Colorado State University), computational analyses (Prof. Eric Schelter, University of Pennsylvania Prof. Due to the challenging nature of this chemistry, we have partnered with some excellent collaborators that help to elucidate the electronic structures of these challenging molecules using variable temperature magnetization studies (Prof. We combine air- and moisture-sensitive synthetic techniques with multinuclear NMR, infrared, electronic absorption, Raman spectroscopies, and X-ray diffraction to synthesize and characterize low-valent uranium compounds. These redox-active ligands effectively store electrons (reducing equivalents) to accomplish multi-electron redox-chemistry, allowing us to avoid the most stable, and thus, unreactive U(IV) oxidation state. Specifically, we have introduced the utility of redox-active ligands for chemical transformation of biologically and industrially relevant small molecules as well as established multi-electron chemistry at this redox-restricted metal. Our research program combines my past research experiences with new ideas in actinide chemistry to create an entirely unexplored field in the small community of actinide chemists. Our overall goal is to raise the understanding of the chemistry of uranium and it's neighbors with respect to organometallic, multi-electron processes, and bonding to be equal to that of its transition metal counterparts. Over the last nine years, my research program has focused on making strides towards these challenges by focusing on understanding the fundamental chemistry of depleted uranium, and more recently, thorium and the transuranic elements. Accordingly, research in the field of actinide chemistry has the potential not only for significant scientific but social and economic impacts. Both fundamental and applied questions remain, including understanding bonding motifs with organic ligands, the generation of new fuels, recycling and environmental remediation of nuclear wastes and polluted sites, and the synthesis of new materials for chemical transformations and catalysis. Considering the challenges that come with an increasing worldwide energy demand, a heightened awareness to climate changes, and the need for carbon-neutral fuel sources, research in actinide sciences is timely and crucial.
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