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Going Where Few Dare To: Investigating the Reactivity and Structure of Uranium Species Using Ion Trap Mass Spectrometry

Dr. Michael van Stipdonk
Department of Chemistry and Biochemistry
Duquesne University
Chemistry Building, Room 400
Physical Seminar

Electrospray ionization and ion-trapping methods of mass spectrometry have significantly improved our ability to study gas-phase ion chemistry, and to determine the intrinsic structure and reactivity of metal ions and metal ion complexes. Ion traps with multi-dimensional (MSn) tandem mass spectrometry capabilities are versatile gas-phase "laboratories" within which ions can be manipulated and studied. Ion traps can also function as “sample cuvettes" for structure determination using wavelength-selective infrared photodissociation. In this seminar, I will describe our studies of the intrinsic structure and behavior of actinide species, focusing on interesting uranium chemistry observed during multiple-stage collision induced dissociation, translational studies involving transuranics, and the characterization of exotic organo-uranium complexes created by substitution and/or elimination of “yl” oxo ligands.

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