1. Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1; 52056 Aachen Germany
2. Department of Chemistry; Moscow State University, Vorobyevy Gory 1; Moscow 119992 Russia
3. Moscow Center for Continuous Mathematical Education, Bol. Vlasyevskiy per. 11; Moscow 119002 Russia
4. Jülich-Aachen Research Alliance, JARA-HPC, RWTH Aachen University; 52056 Aachen Germany