Citation: Forbes, Tori Z.; Burns, Peter. C.; Soderholm, L.; Skanthakumar, S. (2006). Crystal Structures and Magnetic Properties of NaK3(NpO2)4(SO4)4(H2O)2and NaNpO2SO4H2O: Cation−Cation Interactions in a Neptunyl Sulfate Framework. Chemistry of Materials, 18, pp. 1643-.