1. Laboratory of Inorganic Chemistry and Advanced Materials Aristotle University of Thessaloniki Department of Chemical Engineering 54124 Thessaloniki Greece
2. Laboratory of Inorganic Chemistry Department of Chemistry Aristotle University of Thessaloniki 54124 Thessaloniki Greece
3. Center for Research of the Structure of Matter, Magnetic Resonance Laboratory Department of Chemical Engineering Aristotle University of Thessaloniki 54124 Thessaloniki Greece
4. Faculty of Physics and Earth Sciences Institute of Experimental Physics II Leipzig University 04103 Leipzig Germany