M.G. Morozov - Post-graduate Student, Faculty of Physics, Southern Federal University (Rostov-on-Don). E-mail:morozov.rf.nmr@gmail.com Yu.E. Chernysh - Dr. Sc. (Chem.), Southern Federal University (Rostov-on-Don). E-mail: yu.chern@rambler.ru G.P. Sinyavsky - Dr. Sc. (Phys.-Math.), Professor, Head of Department, Southern Federal University (Rostov-on-Don). E-mail: sinyavsky@sfedu.ru