E.S.R. spectrum for AsF5− fprmed from AsF6− by γ-radiolysis

Abstract

The radical AsF₅⁻ is similar to PF₅⁻ but the central atom spin-density is higher. Crystals of KPF₆ containing traces of AsF₆⁻ give high yields of AsF₅⁻ on exposure to ${}^{60}\text{Co}\text{γ}$-rays. This efficient scavenger effect is explained in terms of the greater positive charge on arsenic.