Predict the form of the ¹H-NMR spectrum of chloroethene, CHClCH₂.

Question

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Chloroethene has a total of three chemically distinct proton environments: the methyl group, the vinylic proton adjacent to the chlorine, and the vinylic proton on the opposite side of the chlorine. The vinylic protons are magnetically equivalent, in contrast to the methyl proton. Each of the vinylic protons will couple to the two adjacent protons with a small coupling constant (J value), resulting in a doublet of doublets (ABX pattern). The methyl group will appear as a simple doublet. Thus, the resulting spectrum will have three groups of resonances, each consisting of a doublet of doublets.

Predict the Form of the 1H-NMR Spectrum of Chloroethene, CHClCH2

Predict the Form of the ¹H-NMR Spectrum of Chloroethene, CHClCH₂