Mathematisch-Naturwissenschaftliche Fakultät

Institut für Chemie

Fachgebiet: Anorganische-/Festkörperchemie

Betreuer: Prof. Dr. Martin Köckerling

Dipl.-Chem. Henning W. Rohm
(e-mail: )

Novel Zirconium Cluster Compounds: Synthesis, Structure and Properties

Zirconium cluster compounds can be obtained by solid state syntheses and can be modified by ligand exchange reactions when excised into solvents

Different novel zirconium cluster compounds have been synthesized and were characterized by single crystal diffraction. The main focus was laid on investigations of the influence of structure determining factors on the structure of clusters and the formation of three-dimensional cluster networks.

Novel zirconium cluster compounds were obtained by ligand exchange reactions in different solvents. It was possible to obtain [(Zr6B)Cl12(MeCN)6][Ph4B]•1,6 MeCN which shows a excellent solubility in several organic solvents. This new compound can be used as a convenient precursor for ligand exchange reactions. Also the influence of the solvent on the exchange of the inner and outer ligands was explored. In this context it was examined how ligands affect the location of absorption bands in the UV/vis-region.

Furthermore FIR-spectra of several zirconium cluster compounds were measured. Via vibration analysis it was possible to obtain force constants which are compared to other metal cluster compounds and allow a evaluation of the bonding properties within the zirconium cluster.