Structural and Theoretical Assessment of Covalency in a Pu(III) Borohydride Complex
Not Available
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Engineering topics
Daly, Scott R.
Publications and source records attributed to Daly, Scott R..
Modulation of Fe–Fe distance and spin in diiron complexes using tetradentate ligands with different flanking donors
Here we report the synthesis and characterization of diiron complexes containing triaryl N 4 and N 2 S 2 ligands derived from o -phenylenediamine.
Chemistry↗
Volatile lanthanide complexes with fluorinated heptadentate ligands
Here we describe the synthesis, structures, and volatility of lanthanide complexes containing N 4 O 3 ligands decorated with different fluoroalkyl substituents. The results show how ligand fluorination does not necessarily enhance complex volatility.
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The Influence of Phosphorus Substituents on the Structures and Solution Speciation of Trivalent Uranium and Lanthanide Phosphinodiboranates
Not Available
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Exploratory Synthesis for Reactive f-Element Separations without Solvent
Solvent extraction is commonly used to separate different f-metals found in spent nuclear fuel, but this process results in large volumes of highly contaminated liquid waste that must be remediated or stored at significant expense. The project funded under this award was aimed at addressing solvent-related issues encountered in conventional f-metal separations. Our strategy focused on using solvent-free mechanochemical reactions to prepare lanthanide and actinide borohydride complexes so that they could be separated based on differences in their volatility. Key deliverables described in this report include proof-of-principle results demonstrating that borohydrides called aminodiboranates can be used for volatile lanthanide/lanthanide and lanthanide/uranium separations, as we proposed. Moreover, exploration of a closely related class of borohydrides called phosphinodiboranates allowed us to identify underlying chemical factors that control the volatility of trivalent lanthanide and uranium borohydride complexes with identical structures. Details of published and pending research products are provided, and these include comprehensive synthesis and characterization efforts required to support fundamental studies related to the proposed separations. These technical efforts supported the training of nine graduate students and three undergraduate researchers, and they established air-sensitive transuranic capabilities at the University of Iowa to enhance radiochemical workforce development.
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