Superhalogens in fluoride diruthenium Ru2Fn (n = 1–10): density functional theory Xuefeng Wang, Jun Yan, Wenqian Chen, Xuanyan Zou and Xiaohong Chen Eur. Phys. J. D, 74 6 (2020) 106 Published online: 09 June 2020 DOI: 10.1140/epjd/e2020-100578-7