3- propargyl alcohol, molecular structure

The molecular structure has so far been determined only for 3-(pyrazol-4-yl) propargyl alcohol (98M076) and 5-trimethylsilanyl-4-trimethylsilanylethynyl-l//-pyrazole-3-carboxylic acid ethyl ester (88JOM247). 

Elder, R.C., Florian, L.R., Kennedy, E.R., and Macomber, R.S., Phosphorus containing products from the reaction of propargyl alcohols with phosphorus trihalides. II. The crystal and molecular structure of 2-hydroxy-3,5-di-ferf-butyl-l,2-oxaphosphol-3-ene 2-oxide, /. Org. Chem., 38, 4177, 1973. 

The m/z 55 and 98 peaks remain unexplained. The former does not appear in the FI spectra, consistent with the belief that it is not a molecular pieak but rather corresponds to a fragment ion. The study of metastable spectra showed that the structure of the m/z 55 ion is similar to that produced by the loss of the H radical from propargyl alcohol. 

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