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Chapter 14: Q7P (page 527)

Question: How many \(^{\bf{1}}{\bf{H}}\) NMR signals would you expect for each compound?

a.

b.

c.

Short Answer

Expert verified
  1. 4
  2. 5
  3. 5

Step by step solution

01

NMR spectroscopy

The chemical shift of a proton is affected by the presence of an electronegative atom. The proton around the electronegative atom is deshielded, due to which it absorbs downfield.

02

Step 2: \(^{\bf{1}}{\bf{H}}\) NMR signals in a, b and c

a.

The given compound has four types of protons, and it will give four signals, as shown below.

Structure of a

b.

The given compound has five types of protons, and it will give five signals, as shown below.

Structure of b

c.

The given compound has five types of protons, and it will give five signals, as shown below.

Structure of c

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Most popular questions from this chapter

What protons in alcohol A give rise to each signal in its 1HNMR spectrum? Explain all splitting patterns observed for absorptions between 0鈥�7 ppm.

Question. Compound Q has molecular formula C5H9CIO2. Deduce the structure of P from its 1H and 13C -NMR spectra.

Propose a structure for a compound of molecular formula C7H14O2 with an IR absorption at 1740 cm-1 and the following 1HNMR data:

AbsorptionppmRelativeareasinglet1.29triplet1.33quartet4.12

Which compounds give a 1H NMR spectrum with two signals in a ratio of 2:3?

a.

b.

c.

d.

For each compound give the number of NMR signals, and then determine how many peaks are present for each NMR signal.

a.

b.

c.

d.
See all solutions

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