Knowledge Bank

Vinyl acetate (C$4$H$6$O$2$) was isolated in matrices of nitrogen, argon, and krypton. The ultraviolet irradiation ($\lambda$$\&lt;$ 250 nm) of the matrix results in the formation of a number of products including carbon dioxide, carbon monoxide and ketene (CH$2$CO). Irradiation of the vinyl-$\mathrm{<mrow\; data-mjx-texclass="ORD">13</mrow>}$C$2$ labeled compound yields a mixture of labeled and unlabeled CH$2$CO, CO$2$ and CO, indicating that these products arise from the acetyl and the vinoxy moieties. The product $\mathrm{<mrow\; data-mjx-texclass="ORD">12</mrow>}$C/$\mathrm{<mrow\; data-mjx-texclass="ORD">13</mrow>}$C ratios vary with matrix (N$2$$>$Ar$>$Kr). The photolysis efficiency is reduced when the parent compound is deuterated.