title: In situ hydrothermal reduction of neptunium(VI) as a route to neptunium(IV) phosphonates.
abstract: A lamellar neptunium(IV) methylphosphonate, Np(CH3PO3)(CH3PO3H)(NO3)(H2O).H2O, has been prepared under hydrothermal conditions via the in situ reduction of NpVI to NpIV. The single crystal structure of this compound shows polar layers that are joined to one another via a hydrogen-bonding network involving interlayer water molecules. Magnetic susceptibility measurements demonstrate that the NpIV ions are magnetically isolated from one another.
authors.affiliation: Department of Chemistry and Biochemistry and Center for Actinide Science, Auburn University, Auburn, AL 36849, USA.
authors.forename: Travis H
authors.initials: TH
authors.lastname: Bray
authors.forename: Anna-Gay D
authors.initials: AG
authors.lastname: Nelson
authors.forename: Geng Bang
authors.initials: GB
authors.lastname: Jin
authors.forename: Richard G
authors.initials: RG
authors.lastname: Haire
authors.forename: Thomas E
authors.initials: TE
authors.lastname: Albrecht-Schmitt