1. Technische Universität Bergakademie Freiberg, Department of Chemistry and Physics, Institute of Inorganic Chemistry Leipziger Straße 29 09599 Freiberg Germany
2. Technische Universität Bergakademie Freiberg Department of Chemistry and Physics Institute of Analytical Chemistry Leipziger Straße 29 09599 Freiberg Germany
3. The University of Texas at Arlington Department of Chemistry and Biochemistry 701 S. Nedderman Drive 76019 Arlington TX USA
4. BAM Federal Institute for Materials Research and Testing Division I.3 Richard Willstaetter Straße 11 12489 Berlin Germany