¹³ C NMR spectrum of DMSO- d₆ gives a signal at δ 39.7 ppm as a

Q6 · CSIR-NET Chemistry, June 2017

Paper: CSIR-NET June 2017 · Subject: Organic Chemistry · Chapter: Organic Spectroscopy · Topic: NMR 1H · Marks: 2 · Difficulty: Easy

${ }^{13} \mathrm{C}$ NMR spectrum of DMSO- $d_{6}$ gives a signal at $\delta 39.7 \mathrm{ppm}$ as a

(a)singlet

(b)triplet

(c)quintet

(d)septet

Answer

Answer: D ✓ checked by 4AB · confidence high

Explanation

In DMSO-d₆ each methyl carbon is coupled to three deuterium nuclei (I = 1): multiplicity 2nI + 1 = 2×3×1 + 1 = 7, a septet (1:3:6:7:6:3:1).

Study loop for Organic Spectroscopy