The RgI2 (ion-pair states) van der Waals complexesVera V. Baturo, Sergey S. Lukashov, Sergey A. Poretsky and Anatoly M. PravilovEur. Phys. J. D, 71 9 (2017) 227DOI: https://doi.org/10.1140/epjd/e2017-80142-6