The multiplicities that are observed for the signals in the off-resonance decoupled 13c nmr spectrum of (2e)-3-chloro acrylaldehyde is a singlet, a triplet, and a quartet. The correct option is E.
<h3>What is off-resonance decoupling?</h3>
Off-resonance decoupling is a process of removing all hydrogen and carbon coupling from a signal except for the place which is near the nucleus or joined with the nucleus.
In NMR also, the coupling of hydrogen and carbon is removed except for the place near the nucleus.
Thus, the correct option is E) a singlet, a triplet, and a quartet.
To learn more about off-resonance, refer to the link:
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The question is incomplete. Your most probably complete question is given below:
A) 2 singlets and a doublet
B) a singlet and 2 doublets
C) 3 singlets
D) a singlet, a doublet, and a triplet
E) a singlet, a triplet, and a quartet
