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American Chemical Society, Journal of The American Society for Mass Spectrometry, 11(22), 2011

DOI: 10.1007/s13361-011-0226-5

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Gas-phase coordination complexes of U(VI)O2(2+), Np(VI)O2(2+), and Pu(VI)O2(2+) with dimethylformamide.

Journal article published in 2011 by Philip X. Rutkowski, Daniel Rios, John K. Gibson, Michael J. Van Stipdonk
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Electrospray ionization of actinyl perchlorate solutions in H(2)O with 5% by volume of dimethylformamide (DMF) produced the isolatable gas-phase complexes, [An(VI)O(2)(DMF)(3)(H(2)O)](2+) and [An(VI)O(2)(DMF)(4)](2+), where An = U, Np, and Pu. Collision-induced dissociation confirmed the composition of the dipositive coordination complexes, and produced doubly- and singly-charged fragment ions. The fragmentation products reveal differences in underlying chemistries of uranyl, neptunyl, and plutonyl, including the lower stability of Np(VI) and Pu(VI) compared with U(VI).