Spectroscopic characterisation of radical polyinterhalogen molecules

Abstract

Spectroscopic characterisations of the radical polyinterhalogen molecules IF₂ and I₂F are reported using anion photoelectron spectroscopy. The corresponding parent anions, IF₂⁻ and I₂F⁻, are common products formed in hard Ar–CF₃I plasmas and are relevant in the semiconductor manufacture industry. The I₂F⁻ species, which is present as the [I–I–F]⁻ isomer, is a “non-classical” polyinterhalogen.