試題詳解

30. An ethyl group (CH₃CH₂¯) that is attached to a substituent that does not contain a hydrogen atom appears as what in a NMR spectrum?
(A) a doublet and a triplet with relative intensities of 2 and 3, respectively
(B) a doublet and a triplet with relative intensities of 3 and 2, respectively
(C) a triplet and a quartet with relative intensities of 2 and 3, respectively
(D) a triplet and a quartet with relative intensities of 3 and 2, respectively
(E) none of these