1. International Centre of Future Science, State Key Laboratory of Superhard Materials of Jilin University, Changchun 130012, Chine
2. Donetsk Physical − Technical Institute named after A.A. Galkin NANU, Kiiv 03028, Ukraine
3. Institut de Ciència Molecular/Departament de Química Inorgànica, Universitat de València, Catedràtric Beltrán 2, E-46980 Paterna València, Spain
4. Donetsk Institute of Physics and Engineering named after A.A. Galkin, Donestk 83114, Ukraine