Question

IR

Is there an OH? Wavenumber?

Is there a carbonyl group? If so what type (acid. ester, amide, aldehyde, ketone etc.)?   Wave number?

Other important peaks (terminal alkyne, cyano group, aromatic, alkene, nitro group, amine etc.) and where are they?

27 100 80 90 110 70 40 50 30 80 MZ IR spectrum 70- 80- -1858 50- Transmittance 40- 30- -1375 20- 10- 3500 3000 2500 2000 Wavenumber (cm-1) 1500 1000 dtv C G Search or type URL + # $ % &

Answer 1

No, there is no OH group as for OH group IR spectra shows broad peak of medium intensity in the region around 3300-3400 cm^​-1​​​ as there is no such group in this IR spectra so no OH is present.

For carbonyl group there must be strong peak in the region of 1650- 1700 cm^{​​​​​-1}

But since no such peak is present in the IR spectra so there is no possibility of any carbonyl compound.

Since, there is peak at around 2800-2900 cm^{​​​​​-1} of medium intensity confirm the presence of alkene

Peak at around 1270 region shows the presence of nitro group as N-O stretching peak.

Hope this helps you