1. School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics Georgia Institute of Technology GA 30332‐0400 USA
2. Department of Chemistry New Mexico Highlands University Las Vegas NM 87701 USA
3. Institute of Applied Physics Chisinau MD‐2028 Moldova
4. X‐ray Structural Department A. N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences Moscow 119991 Russian Federation
5. Inorganic Chemistry Department Peoples' Friendship University of Russia Moscow 117198 Russian Federation