Studies in chemical ionization mass spectrometry. 2–i‐C₄H₁₀ and NO spectra of alkynes

Abstract

Abstract The position of the triple bond of n ‐alkynes can be determined by the analysis of the relative abundance of the C n H 2n−1 ions in the chemical ionization (i‐butane) spectra. However, chemical ionization (NO) spectra where both hydrocarbon and NO‐containing ions are formed in a characteristic manner are more reliable for this purpose. The limitations of the fragmentation rules established earlier for electron impact spectra of alkynes were investigated by examination of additional examples.