1. Materials Science Group, Chemistry Department A, The Technical University of Denmark, DK‐2800 Lyngby, Denmark
2. Institute of General and Inorganic Chemistry, 252680 Kiev‐142, Ukraine
3. NKT Research Center, DK‐2605 Bro̸ndby, Denmark
4. Department of Organic Chemistry, Royal Danish School of Pharmacy, DK‐2100 Copenhagen, Denmark