The RgI2 (ion-pair states) van der Waals complexes Vera V. Baturo, Sergey S. Lukashov, Sergey A. Poretsky and Anatoly M. Pravilov Eur. Phys. J. D, 71 9 (2017) 227 Published online: 05 September 2017 DOI: 10.1140/epjd/e2017-80142-6