title: On the Question of Site-Selective Ligand Exchange in Carboxylate-Substituted Metal Oxo Clusters.
abstract: Reaction of [Ti4Zr4O6(OBu)4(OMc)16] (OMc = methacrylate) with acetylacetone (acacH) resulted in dissection of the cluster and formation of [Ti(OBu)2(acac)2] and the smaller cluster [Ti2Zr4O4(OMc)16]. In contrast, the same reaction with [Zr6O4(OH)4(OOCR)12]2·6RCOOH (R = Et, CH2CH=CH2) led to site-selective substitution of two carboxylate ligands and formation of isostructural [Zr6O4(OH)4(OOCR)12-x(acac)x]2·6RCOOH (x≤ 1).
authors: Institute of Materials Chemistry, Vienna University of Technology Getreidemarkt 9, 1060 Vienna, Austria E-mail: Ulrich.Schubert@tuwien.ac.at http://www.imc.tuwien.ac.at.
authors: Johannes
authors: J
authors: Kreutzer
authors: Institute of Materials Chemistry, Vienna University of Technology Getreidemarkt 9, 1060 Vienna, Austria E-mail: Ulrich.Schubert@tuwien.ac.at http://www.imc.tuwien.ac.at.
authors: Matthias
authors: M
authors: Czakler
authors: Institute of Materials Chemistry, Vienna University of Technology Getreidemarkt 9, 1060 Vienna, Austria E-mail: Ulrich.Schubert@tuwien.ac.at http://www.imc.tuwien.ac.at.
authors: Michael
authors: M
authors: Puchberger
authors: Institute of Chemical Technologies and Analytics, Vienna University of Technology Getreidemarkt 9, 1060 Vienna, Austria.
authors: Ernst
authors: E
authors: Pittenauer
authors: Institute of Materials Chemistry, Vienna University of Technology Getreidemarkt 9, 1060 Vienna, Austria E-mail: Ulrich.Schubert@tuwien.ac.at http://www.imc.tuwien.ac.at.
authors: Ulrich
authors: U
authors: Schubert
keywords: Cluster compounds; Ligand exchange; Titanium; Zirconium