WileyPLUS - Worked example 3

Learning outcome

Determine atomic/molecular structure of organic compounds using nuclear magnetic resonance spectral data

Worked example 3

The integration of the 2 signals in the ¹H NMR spectrum of a ketone (C₇H₁₄O) gives the intensity ratio 6 : 1. Determine the number of H atoms giving rise to each signal and propose a stucture for C₇H₁₄O.

The intensity ratio of the two ¹H NMR signals is 6 : 1 or 12 : 2

so there are 2 sets of equivalent H atoms: one set has 12 equivalent H atoms (H^a)

and the second set has 2 equivalent H atoms (H^b) so the structure is:

Chemistry

Concept Basics

// NMR

Worked example 3