title: Ln12 -Containing 60-Tungstogermanates: Synthesis, Structure, Luminescence, and Magnetic Studies.
abstract: A new class of hexameric Ln12 -containing 60-tungstogermanates, [Na(H2 O)6 ⊂Eu12 (OH)12 (H2 O)18 Ge2 (GeW10 O38 )6 ](39-) (Eu12 ), [Na(H2 O)6 ⊂Gd12 (OH)6 (H2 O)24 Ge(GeW10 O38 )6 ](37-) (Gd12 ), and [(H2 O)6 ⊂Dy12 (H2 O)24 (GeW10 O38 )6 ](36-) (Dy12 ), comprising six di-Ln-embedded {β(4,11)-GeW10 } subunits was prepared by reaction of [α-GeW9 O34 ](10-) with Ln(III) ions in weakly acidic (pH 5) aqueous medium. Depending on the size of the Ln(III) ion, the assemblies feature selective capture of two (for Eu12 ), one (for Gd12 ), or zero (for Dy12 ) extra Ge(IV) ions. The selective encapsulation of a cationic sodium hexaaqua complex [Na(H2 O)6 ](+) was observed for Eu12 and Gd12 , whereas Dy12 incorporates a neutral, distorted-octahedral (H2 O)6 cluster. The three compounds were characterized by single-crystal XRD, ESI-MS, photoluminescence, and magnetic studies. Dy12 was shown to be a single-molecule magnet.
authors.affiliation: Jacobs University, Department of Life Sciences and Chemistry, P.O. Box 750 561, 28725 Bremen (Germany) http://www.jacobs-university.de/ses/ukortz.
authors.forename: Kai-Yao
authors.initials: KY
authors.lastname: Wang
authors.affiliation: Jacobs University, Department of Life Sciences and Chemistry, P.O. Box 750 561, 28725 Bremen (Germany) http://www.jacobs-university.de/ses/ukortz.|Department of Chemistry, Faculty of Sciences, University of Balamand, P.O. Box 100, Tripoli (Lebanon).
authors.forename: Bassem S
authors.initials: BS
authors.lastname: Bassil
authors.affiliation: Jacobs University, Department of Life Sciences and Chemistry, P.O. Box 750 561, 28725 Bremen (Germany) http://www.jacobs-university.de/ses/ukortz.
authors.forename: Zhengguo
authors.initials: Z
authors.lastname: Lin
authors.affiliation: Jacobs University, Department of Life Sciences and Chemistry, P.O. Box 750 561, 28725 Bremen (Germany) http://www.jacobs-university.de/ses/ukortz.
authors.forename: Isabella
authors.initials: I
authors.lastname: Römer
authors.affiliation: Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven (Belgium).
authors.forename: Stef
authors.initials: S
authors.lastname: Vanhaecht
authors.affiliation: Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven (Belgium).
authors.forename: Tatjana N
authors.initials: TN
authors.lastname: Parac-Vogt
authors.affiliation: Institute of Chemical Research of Catalonia (ICIQ), Av. Paisos Catalans 16, 43007 Tarragona (Spain).
authors.forename: Cristina
authors.initials: C
authors.lastname: Sáenz de Pipaón
authors.affiliation: Institute of Chemical Research of Catalonia (ICIQ), Av. Paisos Catalans 16, 43007 Tarragona (Spain).|Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluis Companys, 23, 08010, Barcelona (Spain).
authors.forename: José Ramón
authors.initials: JR
authors.lastname: Galán-Mascarós
authors.affiliation: Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic, Conversion Materials, School of Chemistry, Beijing Institute of Technology, Beijing 100081 (P.R. China).
authors.forename: Linyuan
authors.initials: L
authors.lastname: Fan
authors.affiliation: Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic, Conversion Materials, School of Chemistry, Beijing Institute of Technology, Beijing 100081 (P.R. China).
authors.forename: Jie
authors.initials: J
authors.lastname: Cao
authors.affiliation: Jacobs University, Department of Life Sciences and Chemistry, P.O. Box 750 561, 28725 Bremen (Germany) http://www.jacobs-university.de/ses/ukortz. u.kortz@jacobs-university.de.
authors.forename: Ulrich
authors.initials: U
authors.lastname: Kortz
keywords: lanthanides; luminescence; magnetic properties; polyoxometalates; tungsten