OH, which leads ultimately to acetamide. They place this species at -9.0 kcal mol The compound was recently synthesised via the flash vacuum pyrolysis of malonamic acid and characterised spectroscopically, by trapping in an argon matrix at 10 K, as part of a study of interstellar presence of pre-biotic molecules. The authors show via coupled cluster computations at the AE-CCSD(T)/cc-pVTZ level of theory reaction energy profiles of 1,3[H]-transfers linking anti 1-amino ethenol and (Z,E ) ethanimidic acid, and, syn 1-amino ethenol and (Z,Z ) ethanimidic acid, Fig. .