Chapter 15, Problem 15.36SP

(a)

Interpretation Introduction

Interpretation:

The pi molecular orbitals of hexa-1,3,5-triene is to be drawn.

Concept introduction:

Molecular orbital diagrams are used for determining the bonding in molecules using linear combination of atomic orbitals. The number of molecular orbitals formed is equal to the number of atomic orbitals that combine with each other.

(b)

Interpretation Introduction

Interpretation:

The electronic configuration of the ground state of hexa-1,3,5-triene is to be stated.

Concept introduction:

Molecular orbital diagrams are used for determining the bonding in molecules using linear combination of atomic orbitals. The number of molecular orbitals formed is equal to the number of atomic orbitals that combine with each other.

(c)

Interpretation Introduction

Interpretation:

The product that would result from the $\left[6+2\right]$ cycloaddition of hexa-1,3,5-triene with maleic anhydride is to be stated.

Concept introduction:

A chemical reaction in which cyclic product is formed from conjugate system is known as cycloaddition reaction.

(d)

Interpretation Introduction

Interpretation:

The $\left[6+2\right]$ cycloaddition of hexa-1,3,5-triene with maleic anhydride is thermally forbidden but photochemically allowed is to be stated.

Concept introduction:

Molecular orbital diagrams are used for determining the bonding in molecules using linear combination of atomic orbitals. The number of molecular orbitals formed is equal to the number of atomic orbitals that combine with each other.

(e)

Interpretation Introduction

Interpretation:

The Diels-Alder product that would result from heating hexa-1,3,5-triene with maleic anhydride is to be stated.

Concept introduction:

A chemical reaction that involves $\left[4+2\right]$ cycloaddition is called Diels-Alder reaction. The reactant molecules that give rise to product are diene and dienophile.