title: Further insights into intermediate- and mixed-valency in neptunium oxoanion compounds: structure and absorption spectroscopy of K2[(NpO2)3B10O16(OH)2(NO3)2].
abstract: The reaction of Np(V) chloride with molten boric acid results in the disproportionation of Np(V) into Np(IV) and Np(VI), and the crystallization of K(2)[(NpO(2))(3)B(10)O(16)(OH)(2)(NO(3))(2)]. UV-vis-NIR spectroscopy demonstrates that in addition to the Np(VI) and Np(V) found in the crystal structure, Np(IV) is also present.
authors.affiliation: Department of Civil Engineering and Geological Sciences , 156 Fitzpatrick Hall, University of Notre Dame, Notre Dame, Indiana 46556, USA.
authors.forename: Shuao
authors.initials: S
authors.lastname: Wang
authors.forename: Evgeny V
authors.initials: EV
authors.lastname: Alekseev
authors.forename: Wulf
authors.initials: W
authors.lastname: Depmeier
authors.forename: Thomas E
authors.initials: TE
authors.lastname: Albrecht-Schmitt