title: Lanthanide-transition metal chalcogenido cluster materials.
abstract: [(THF)3Sm(SePh)2Zn(SePh)2]n decomposes to give a variety of products, including [(THF)8Sm4Se(SePh)8](2+)[Zn8Se(SePh)16](2-), an ionic cluster that can also be prepared in more than 60% yield by stoichiometric addition of Se to a mixture of Sm(SePh)3 and Zn(SePh)2. The isostructural Nd compound [(THF)8Nd4Se(SePh)8](2+)[Zn8Se(SePh)16](2-) was also prepared by the stoichiometric route to establish the viability of this cluster type with redox-inactive Ln. In addition, the salt [Yb(THF)6](3+)[Fe4Se4(SePh)4](3-) was isolated and structurally characterized. These ionic cluster materials illustrate the difficulties associated with doping Ln ions into covalent metal chalcogenido matrixes.
authors.affiliation: Department of Chemistry and Chemical Biology, Rutgers, the State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, USA.
authors.forename: Anna
authors.initials: A
authors.lastname: Kornienko
authors.forename: Louise
authors.initials: L
authors.lastname: Huebner
authors.forename: Deborah
authors.initials: D
authors.lastname: Freedman
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Emge
authors.forename: John G
authors.initials: JG
authors.lastname: Brennan