Low‐temperature Co‐condensation of Fluorine Compounds. IV. A New Preparation and I.R. Spectra of Bromyl Fluoride

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Abstract
A new synthesis for BrO2F is described: A solid co‐condensate of BrF5 and H2O (molar ratio 5:1), prepared at − 196°C, reacts to BrO2F by warming up to −60°C. The nearly quantitative conversion of H2O to BrO2F makes this method economically important for the preparation of Br18O2F, especially. The i.r. spectra of BrO2F and Br18O2F have been obtained in argon matrix, in solid state, and in the gas phase. BrO2F is monomeric and unstable (τ1/2≃ 30 min) in the gas phase. Evidence is presented for stabilization by association in the condensed state.