1. Section for Solid
State and Theoretical Inorganic Chemistry, Institute of Inorganic Chemistry, Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
2. Department
of Chemical Engineering, Münster University of Applied Sciences, Stegerwaldstraße 39, 48565 Steinfurt, Germany
3. Department
of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
4. Measurement
Science and Standards, National Research Council, Ottawa, Ontario, K1A 0R6, Canada