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Chapter 14: Q.21558-14-7P. (page 535)

How many NMR signals would you expect for each compound?

a.

b.

c.

Short Answer

Expert verified

a. 4

b. 5

c. 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

 1H 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

Label the protons in each highlighted CH2 group as enantiotopic, diastereotopic, or homotopic.

a.

b.

c.

Question: Describe the \({}^{\bf{1}}{\bf{H}}\)NMR spectrum of each compound. State how many NMR signals are present, the splitting pattern for each signal, and the approximate chemical shift.

a.

b.

c.

d.

Label the signals due to \({{\bf{H}}_{\bf{a}}}\), \({{\bf{H}}_{\bf{b}}}\), and \({{\bf{H}}_{\bf{c}}}\) in the 1 H NMR spectrum of acrylonitrile \(\left( {{\bf{C}}{{\bf{H}}_{\bf{2}}}{\bf{ = CHCN}}} \right)\). Draw a splitting diagram for the absorption due to the \({{\bf{H}}_{\bf{c}}}\) proton.

Sketch the NMR spectrum of CH3CH2Cl , giving the approximate location of each NMR signal.

How many NMR signals does each compound give?

a.

b.

c.

d.
See all solutions

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