[girl101]

Compound A (C12H11NO2)
IR   :   2225, 1740, 1645, 1600 and 1505 cm-1 
2.05δ (3H, dd, J = 7.10, 1.80 Hz)
3.65δ (2H, s)
6.10δ (1H, dq, J = 15.50, 1.80 Hz)
6.50δ(2H, d, J = 7.80 Hz)
7.40δ (2H, d, J = 7.80 Hz)
7.65δ (1H, dq, J = 15.50, 7.10 Hz

also i have to get 2 isomers that will have the same ir spectrum . but ir cant distinguish isomers right?

SO I PREDICTED MY MOLECULE TO HAVE A NITRILE GROUP  AND 1 BENZENE RING WHEN I DREW IT OUT I AM NOT GETTING A 2 H SINGLET . can you help me predict this molecule please. im guessing the 2 h singlet will be with a nh2 but the molecule has a double bond equivalence of 8

[Dan]

SO I PREDICTED MY MOLECULE TO HAVE A NITRILE GROUP  AND 1 BENZENE RING WHEN I DREW IT OUT I AM NOT GETTING A 2 H SINGLET . can you help me predict this molecule please. im guessing the 2 h singlet will be with a nh2 but the molecule has a double bond equivalence of 8

Can you show the structures you have considered so far?

How can you have NH₂ and C≡N?

Other than the nitrile, what other functional groups does the IR point to?

[girl101]

no i know you cant have nh2 and cn im saying with the nh2 you can get the 2h singlet. Ir points to an alkyne group nothing else

[Dan]

Please take care with your post formatting - e.g NH₂, not nh2.

no i know you cant have nh2 and cn im saying with the nh2 you can get the 2h singlet.

Ok, but is CH₂ not an option?

Ir points to an alkyne group nothing else

Nothing else? You already mentioned nitrile as a possibility... 1740 cm^-1 is also useful diagnostic, any ideas on what that may indicate?