Infrared spectroscopy is a useful technique in identifying terminal alkynes.What is/are the characteristic stretching band(s)for a terminal alkyne?

Question

Quizplus · Accepted Answer

The characteristic stretching band for a terminal alkyne is in the range of 2100-2260 cm^-1, which corresponds to the C≡C bond stretching vibration. Therefore, option C is correct. Additionally, there is also a stretching band in the range of 3260-3330 cm^-1, which corresponds to the sp hybridized C-H stretching vibration, as well as a band in the range of 1550-1680 cm^-1, which corresponds to the C≡C bending vibration. Both of these bands are also relevant to terminal alkynes, making option E the correct choice.

Infrared Spectroscopy Is a Useful Technique in Identifying Terminal Alkynes