1. Department of Organic Chemistry Ivan Franko National University of Lviv Kyryla i Mefodiya Str. 6 79005 Lviv Ukraine
2. Institute of Organic Chemistry Clausthal University of Technology Leibnizstrasse 6 38678 Clausthal‐Zellerfeld Germany
3. Department of Inorganic Chemistry and Technology Jozef Stefan Institute Jamova 39 1000 Ljubljana Slovenia