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Chapter 14: Q.21558-14-46P (page 563)

Question: Draw the four constitutional isomers having molecular formula C4H9Brand indicate how many different kinds of carbon atoms each has.

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Answer

Step by step solution

01

13C NMR spectroscopy

13C spectroscopy gives all the types of carbon signals. The carbon present in a different environment gives different signals.

02

Constitutional isomers

The constitutional isomers give different signals due to different orientations of the groups. Different orientations give different chemical environment.

03

Explanation

The constitutional isomers C4H9Br and their corresponding signals are shown as:

Four constitutional isomers ofC4H9Br

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Most popular questions from this chapter

How many 1H NMR signals does each dimethylcyclopropane show?

Question: What effect does increasing the operating frequency of a1HNMR spectrum have on each value: (a) the chemical shift in未 ;(b) the frequency of an absorption in Hz; (c) the magnitude of a coupling constant J in Hz?

Question: The 1 H NMR spectrum of N,N-dimethylformamide shows three singlets at 2.9, 3.0, and 8.0 ppm. Explain why the two groups are not equivalent to each other, thus giving rise to two NMR signals.

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