Chapter 4, Problem 4.20P

Interpretation Introduction

(a)

Interpretation:

The compound classes listed in Table 1-6 that have an IHD of 1 are to be identified.

Concept introduction:

Saturated compound is one which has maximum possible number of hydrogen atoms consistent with the number and type of other atoms and the octet and duet rules.

In a saturated hydrocarbon containing n carbon atoms, the number of hydrogen atoms is equal to $\text{2n+2}$. Compounds containing multiple bonds or rings contain less than this number of hydrogen atoms and are called unsaturated compounds. The hydrogen deficiency for a compound is indicated by Index of Hydrogen Deficiency (IHD). IHD is defined as half the number of missing hydrogens, compared to an analogous saturated molecule.

A fully saturated compound has only singly bonded atoms, one per H, four per C, 2 per O, and 3 per N. Each double bond contributes 1, a triple bond contributes 2, and a ring contributes 1 toward IHD.

Interpretation Introduction

(b)

Interpretation:

The compound classes listed in Table 1-6 that have an IHD of 2 are to be identified.

Concept introduction:

Saturated compound is one which has maximum possible number of hydrogen atoms consistent with the number and type of other atoms and the octet and duet rules.

In a saturated hydrocarbon containing n carbon atoms, the number of hydrogen atoms is equal to $\text{2n+2}$. Compounds containing multiple bonds or rings contain less than this number of hydrogen atoms and are called unsaturated compounds. The hydrogen deficiency for a compound is indicated by Index of Hydrogen Deficiency (IHD). IHD is defined as half the number of missing hydrogens, compared to an analogous saturated molecule.

A fully saturated compound has only singly bonded atoms, one per H, four per C, 2 per O, and 3 per N. Each double bond contributes 1, a triple bond contributes 2, and a ring contributes 1 toward IHD.

Interpretation Introduction

(c)

Interpretation:

The compound classes listed in Table 1-6 that have an IHD of 3 are to be identified.

Concept introduction:

Saturated compound is one which has maximum possible number of hydrogen atoms consistent with the number and type of other atoms and the octet and duet rules.

In a saturated hydrocarbon containing n carbon atoms, the number of hydrogen atoms is equal to $\text{2n+2}$. Compounds containing multiple bonds or rings contain less than this number of hydrogen atoms and are called unsaturated compounds. The hydrogen deficiency for a compound is indicated by Index of Hydrogen Deficiency (IHD). IHD is defined as half the number of missing hydrogens, compared to an analogous saturated molecule.

A fully saturated compound has only singly bonded atoms, one per H, four per C, 2 per O, and 3 per N. Each double bond contributes 1, a triple bond contributes 2, and a ring contributes 1 toward IHD.

Interpretation Introduction

(d)

Interpretation:

The compound classes listed in Table 1-6 that have an IHD of 4 are to be identified.

Concept introduction:

Saturated compound is one which has maximum possible number of hydrogen atoms consistent with the number and type of other atoms and the octet and duet rules.

In a saturated hydrocarbon containing n carbon atoms, the number of hydrogen atoms is equal to $\text{2n+2}$. Compounds containing multiple bonds or rings contain less than this number of hydrogen atoms and are called unsaturated compounds. The hydrogen deficiency for a compound is indicated by Index of Hydrogen Deficiency (IHD). IHD is defined as half the number of missing hydrogens, compared to an analogous saturated molecule.

A fully saturated compound has only singly bonded atoms, one per H, four per C, 2 per O, and 3 per N. Each double bond contributes 1, a triple bond contributes 2, and a ring contributes 1 toward IHD.