Structures and properties of the mono- and diprotonated species of acetylenedicarbonyl fluoride

Acetylenedicarbonyl fluoride is obtained monoprotonated in XF/SbF₅ (X = H, D). The diprotonation is obtained by a decomposition in R-134a. The Z-conformation of the protonated acyl fluorides was investigated on the MP2-aug-cc-pVTZ level of theory.