Affiliation: | 1. Institute of Chemistry of New Materials, Universit?t Osnabrück, Osnabrück, Germany;2. Institute of Technical Chemistry, Universit?t Leipzig, Leipzig, Germany;3. Institute of Inorganic Chemistry, Universit?t Würzburg, Würzburg, Germany;4. Department of Physics, Universit?t Osnabrück, Osnabrück, Germany |