Chapter 15.9, Problem 20CC

(a)

Interpretation Introduction

Interpretation:

The molecular weight and the expected value for the molecular ion peak in mass spectrum for the given set of compounds should be determined.

Concept Introduction:

Mass spectroscopy: It is a form of spectroscopic technique which is used for the elucidation of the molecular formula and molecular weight of the compound, depending upon the mass of the molecule.

Molecular formula: It represents the types of atoms with their total number present in a given molecule.

Molecular ion peak ${\text{(M)}}^{\text{+}·}$: It is defined as the heaviest peak in the IR spectrum of the molecule which represents the largest molecular ion in the given molecule with greater m/z value.

Nitrogen Rule: It says that the molecule with odd molecular weight denotes the presence of odd number of nitrogen atoms in the molecule and the molecule with even molecular weight determines the absence or the presence of even number of nitrogen atoms present in the molecule.

(b)

Interpretation Introduction

Interpretation:

The molecular weight and the expected value for the molecular ion peak in mass spectrum for the given set of compounds should be determined.

Concept Introduction:

Mass spectroscopy: It is a form of spectroscopic technique which is used for the elucidation of the molecular formula and molecular weight of the compound, depending upon the mass of the molecule.

Molecular formula: It represents the types of atoms with their total number present in a given molecule.

Molecular ion peak ${\text{(M)}}^{\text{+}·}$: It is defined as the heaviest peak in the IR spectrum of the molecule which represents the largest molecular ion in the given molecule with greater m/z value.

Nitrogen Rule: It says that the molecule with odd molecular weight denotes the presence of odd number of nitrogen atoms in the molecule and the molecule with even molecular weight determines the absence or the presence of even number of nitrogen atoms present in the molecule.

(c)

Interpretation Introduction

Interpretation:

The molecular weight and the expected value for the molecular ion peak in mass spectrum for the given set of compounds should be determined.

Concept Introduction:

Mass spectroscopy: It is a form of spectroscopic technique which is used for the elucidation of the molecular formula and molecular weight of the compound, depending upon the mass of the molecule.

Molecular formula: It represents the types of atoms with their total number present in a given molecule.

Molecular ion peak ${\text{(M)}}^{\text{+}·}$: It is defined as the heaviest peak in the IR spectrum of the molecule which represents the largest molecular ion in the given molecule with greater m/z value.

Nitrogen Rule: It says that the molecule with odd molecular weight denotes the presence of odd number of nitrogen atoms in the molecule and the molecule with even molecular weight determines the absence or the presence of even number of nitrogen atoms present in the molecule.

(d)

Interpretation Introduction

Interpretation:

The molecular weight and the expected value for the molecular ion peak in mass spectrum for the given set of compounds should be determined.

Concept Introduction:

Mass spectroscopy: It is a form of spectroscopic technique which is used for the elucidation of the molecular formula and molecular weight of the compound, depending upon the mass of the molecule.

Molecular formula: It represents the types of atoms with their total number present in a given molecule.

Molecular ion peak ${\text{(M)}}^{\text{+}·}$: It is defined as the heaviest peak in the IR spectrum of the molecule which represents the largest molecular ion in the given molecule with greater m/z value.

Nitrogen Rule: It says that the molecule with odd molecular weight denotes the presence of odd number of nitrogen atoms in the molecule and the molecule with even molecular weight determines the absence or the presence of even number of nitrogen atoms present in the molecule.