Chapter 14.SE, Problem 45AP

Interpretation Introduction

a)

Interpretation:

The molecules given are to be arranged from shortest to longest wavelength on the basis their wavelength of maximum absorption in UV spectroscopy.

Concept introduction:

Extended conjugation shifts the UV absorption maxima to higher wavelengths. For example, the UV absorption maxima for 1,3-butadiene is 217 nm and that of 1,3,5-hexatriene is 258nm.

To arrange:

The molecules given from shortest to longest wavelength on the basis their wavelength of maximum absorption in UV spectroscopy.

Interpretation Introduction

b)

Interpretation:

The molecules given are to be arranged from shortest to longest wavelength on the basis their wavelength of maximum absorption in UV spectroscopy.

Concept introduction:

Extended conjugation shifts the UV absorption maxima to higher wavelengths. For example, the UV absorption maxima for 1,3-butadiene is 217 nm and that of 1,3,5-hexatriene is 258nm.

To arrange:

The molecules given from shortest to longest wavelength on the basis their wavelength of maximum absorption in UV spectroscopy.

Interpretation Introduction

c)

Interpretation:

The molecules given are to be arranged from shortest to longest wavelength on the basis their wavelength of maximum absorption in UV spectroscopy.

Concept introduction:

Extended conjugation shifts the UV absorption maxima to higher wavelengths. For example, the UV absorption maxima for 1,3-butadiene is 217 nm and that of 1,3,5-hexatriene is 258nm.

To arrange:

The molecules given from shortest to longest wavelength on the basis their wavelength of maximum absorption in UV spectroscopy.