The Case of H${}_2$C${}_3$O Isomers, Revisited: Solving the Mystery of the Missing Propadienone

Christopher N. Shingledecker, Sonia Álvarez-Barcia, Viktoria H. Korn +1

To date, two isomers of H${}_2$C${}_3$O have been detected, namely, propynal (HCCCHO) and cylclopropenone (c-H${}_2$C${}_3$O). A third, propadienone (CH${}_2$CCO), has thus far eluded observ…