title: Alpha-Na6Pb3(PS4)4, a noncentrosymmetric thiophosphate with the novel, saucer-shaped [Pb3(PS4)4]6- cluster, and its metastable, 3-dimensionally polymerized allotrope beta-Na6Pb3(PS4)4.
authors.affiliation: Department of Chemistry and Center for Fundamental Materials Research, Michigan State University, East Lansing, MI 48824, USA.
authors.forename: J A
authors.initials: JA
authors.lastname: Aitken
authors.forename: M G
authors.initials: MG
authors.lastname: Kanatzidis