Abstract

In the course of studying the reactivity of three organophosphonate compounds with air discharge products, it became desirable to determine the VUV absorption cross sections for these materials [DMMP, (CH₃O)₂PO(CH₃); DEMP, (C₂H₅O)₂PO(CH₃); O,S-DEMP, (C₂H₅O)(C₂H₅S)PO(CH₃)]. Both O₂ and O₂(<i>a</i>¹Δ_<i>g</i>) are conveniently monitored by VUV absorption, and it was thus necessary to determine the degree of interference that the organophosphonates might cause. To our knowledge, there is no information available on their VUV absorption below 200 nm, whereas significant O₂ absorption does not take place above 175 nm.

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