title: {Ge9[Si(SiMe3)2(SiPh3)]3}(-): Ligand Modification in Metalloid Germanium Cluster Chemistry.
abstract: The influence of the stabilizing ligand on the physical and chemical properties of a metalloid cluster compound is important for nanotechnology as metalloid clusters are ideal model compounds for metal nanoparticles. Here we present the synthesis of a differently substituted metalloid {Ge9R3}(-) cluster: {Ge9[Si(SiMe3)2(SiPh3)]3}(-) 1, which is obtained in good yield by the reaction of K4Ge9 with ClSi(SiMe3)2(SiPh3). 1 is characterized via NMR and mass spectrometry, but crystallization is hindered. However, the reaction with HgCl2 gives the neutral compound HgGe18[Si(SiMe3)2(SiPh3)]6 2, which can be crystallized and structurally characterized. The presented results are a first step for the investigation of the ligand's influence on the properties of a metalloid germanium cluster compound.
authors.affiliation: Faculty of Science, Institute of Inorganic Chemistry, University Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany.
authors.forename: Oleksandr
authors.initials: O
authors.lastname: Kysliak
authors.affiliation: Faculty of Science, Institute of Inorganic Chemistry, University Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany.
authors.forename: Claudio
authors.initials: C
authors.lastname: Schrenk
authors.affiliation: Faculty of Science, Institute of Inorganic Chemistry, University Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Schnepf