1. A. E. Arbuzov Institute of Organic and Physical Chemistry FRC Kazan Scientific Center Russian Academy of Sciences Arbuzov str. 8 420088 Kazan Russia
2. A. M. Butlerov Chemistry Institute of the Kazan Federal University Kremlevskaya str. 18 420008 Kazan Russia
3. Institute of Physics Kazan Federal University Kremlevskaya str. 18 420008 Kazan Russia
4. Institute for Solid State and Materials Research IFW Dresden Helmholtz str. 20 01069 Dresden Germany
5. Institut für Feskörper‐ und Materialphysik Technische Universität Dresden 01062 Dresden Germany