Chapter 9, Problem 9.26SP

(a)

Interpretation Introduction

To determine: The structural formula for $2-\text{octyne}$.

Interpretation: The structural formula for $2-\text{octyne}$ is to be shown.

Concept introduction: Structural formulas are used to describe the arrangement of atoms, groups or substituents in a molecule, whereas molecular formula describes the total number and the type of atoms present in a molecule. The chemical structures are described by IUPAC name or common names. IUPAC names are totally different from common names because IUPAC names are applied at international level and it comprises suffix, prefix, numbers and other priority rules.

Answer to Problem 9.26SP

The structural formula for $2-\text{octyne}$ had shown.

Explanation of Solution

The structural formula for $2-\text{octyne}$ is shown in figure 1.

Figure 1

The structural formula for $2-\text{octyne}$ comprises eight carbon atoms along with triple bond present in between the second and third carbon atom.

(b)

Interpretation Introduction

To determine: The structural formula for $\text{ethylisopentylacetylene}$.

Interpretation: The structural formula for $\text{ethylisopentylacetylene}$ is to be shown.

Concept introduction: Structural formulas are used to describe the arrangement of atoms, groups or substituents in a molecule, whereas molecular formula describes the total number and the type of atoms present in a molecule. The chemical structures are described by IUPAC name or common names. IUPAC names are totally different from common names because IUPAC names are applied at international level and it comprises suffix, prefix, numbers and other priority rules.

Answer to Problem 9.26SP

The structural formula for $\text{ethylisopentylacetylene}$ had shown.

Explanation of Solution

The structural formula for $\text{ethylisopentylacetylene}$ is shown in figure 2.

Figure 2

The structural formula for $\text{ethylisopentylacetylene}$ comprises parent chain of eight carbon atoms along with methyl group.

(c)

Interpretation Introduction

To determine: The structural formula for $\text{ethynylbenzene}$.

Interpretation: The structural formula for $\text{ethynylbenzene}$ is to be shown.

Concept introduction: Structural formulas are used to describe the arrangement of atoms, groups or substituents in a molecule, whereas molecular formula describes the total number and the type of atoms present in a molecule. The chemical structures are described by IUPAC name or common names. IUPAC names are totally different from common names because IUPAC names are applied at international level and it comprises suffix, prefix, numbers and other priority rules.

Answer to Problem 9.26SP

The structural formula for $\text{ethynylbenzene}$ had shown.

Explanation of Solution

The structural formula for $\text{ethynylbenzene}$ is shown in figure 3.

Figure 3

The structural formula for $\text{ethynylbenzene}$ consists of acetylene group and benzene ring.

(d)

Interpretation Introduction

To determine: The structural formula for $\text{cyclohexylacetylene}$.

Interpretation: The structural formula for $\text{cyclohexylacetylene}$ is to be shown.

Concept introduction: Structural formulas are used to describe the arrangement of atoms, groups or substituents in a molecule, whereas molecular formula describes the total number and the type of atoms present in a molecule. The chemical structures are described by IUPAC name or common names. IUPAC names are totally different from common names because IUPAC names are applied at international level and it comprises suffix, prefix, numbers and other priority rules.

Answer to Problem 9.26SP

The structural formula for $\text{cyclohexylacetylene}$ had shown.

Explanation of Solution

The structural formula for $\text{cyclohexylacetylene}$ is shown in figure 4.

Figure 4

The structural formula for $\text{cyclohexylacetylene}$ comprises acetylene group along with cyclohexane ring.

(e)

Interpretation Introduction

To determine: The structural formula for $5-\text{methyl}-3-\text{octyne}$.

Interpretation: The structural formula for $5-\text{methyl}-3-\text{octyne}$ is to be shown.

Concept introduction: Structural formulas are used to describe the arrangement of atoms, groups or substituents in a molecule, whereas molecular formula describes the total number and the type of atoms present in a molecule. The chemical structures are described by IUPAC name or common names. IUPAC names are totally different from common names because IUPAC names are applied at international level and it comprises suffix, prefix, numbers and other priority rules.

Answer to Problem 9.26SP

The structural formula for $5-\text{methyl}-3-\text{octyne}$ had shown.

Explanation of Solution

The structural formula for $5-\text{methyl}-3-\text{octyne}$ is shown in figure 5.

Figure 5

It is conferred form the above structure that the structural formula for $5-\text{methyl}-3-\text{octyne}$ consists of eight carbon atoms parent chain along with triple bond at third carbon atom and methyl group at fifth carbon atom.

(f)

Interpretation Introduction

To determine: The structural formula for $trans-3,5-\text{dibromocyclodecyne}$.

Interpretation: The structural formula for $trans-3,5-\text{dibromocyclodecyne}$ is to be shown.

Concept introduction: Structural formulas are used to describe the arrangement of atoms, groups or substituents in a molecule, whereas molecular formula describes the total number and the type of atoms present in a molecule. The chemical structures are described by IUPAC name or common names. IUPAC names are totally different from common names because IUPAC names are applied at international level and it comprises suffix, prefix, numbers and other priority rules.

Answer to Problem 9.26SP

The structural formula for $trans-3,5-\text{dibromocyclodecyne}$ had shown.

Explanation of Solution

The structural formula for $trans-3,5-\text{dibromocyclodecyne}$ is shown in figure 6.

Figure 6

The stereochemistry along with structural formula for $trans-3,5-\text{dibromocyclodecyne}$ is shown, if the triple bonds are present along with substituent groups, then triple bond will have lower priority.

(g)

Interpretation Introduction

To determine: The structural formula for $5,5-\text{dibromo}-4-\text{phenylcyclooct}-1-\text{yne}$.

Interpretation: The structural formula for $5,5-\text{dibromo}-4-\text{phenylcyclooct}-1-\text{yne}$ is to be shown.

Concept introduction: Structural formulas are used to describe the arrangement of atoms, groups or substituents in a molecule, whereas molecular formula describes the total number and the type of atoms present in a molecule. The chemical structures are described by IUPAC name or common names. IUPAC names are totally different from common names because IUPAC names are applied at international level and it comprises suffix, prefix, numbers and other priority rules.

Answer to Problem 9.26SP

The structural formula for $5,5-\text{dibromo}-4-\text{phenylcyclooct}-1-\text{yne}$ had shown.

Explanation of Solution

The structural formula for $5,5-\text{dibromo}-4-\text{phenylcyclooct}-1-\text{yne}$ is shown in figure 7.

Figure 7

The structural formula for $5,5-\text{dibromo}-4-\text{phenylcyclooct}-1-\text{yne}$ comprises cyclooctyne with two bromo groups and one benzene ring at fourth carbon atoms.

(h)

Interpretation Introduction

To determine: The structural formula for $\left(E\right)-6-\text{ethyloct}-2-\text{en}-4-\text{yne}$.

Interpretation: The structural formula for $\left(E\right)-6-\text{ethyloct}-2-\text{en}-4-\text{yne}$ is to be shown.

Concept introduction: Structural formulas are used to describe the arrangement of atoms, groups or substituents in a molecule, whereas molecular formula describes the total number and the type of atoms present in a molecule. The chemical structures are described by IUPAC name or common names. IUPAC names are totally different from common names because IUPAC names are applied at international level and it comprises suffix, prefix, numbers and other priority rules.

Answer to Problem 9.26SP

The structural formula for $\left(E\right)-6-\text{ethyloct}-2-\text{en}-4-\text{yne}$ had shown.

Explanation of Solution

The structural formula for $\left(E\right)-6-\text{ethyloct}-2-\text{en}-4-\text{yne}$ is shown in figure 8.

Figure 8

The structural formula for $\left(E\right)-6-\text{ethyloct}-2-\text{en}-4-\text{yne}$ consists of parent chain of eight carbon atoms along with one double bond, one triple bond at methyl group.

(i)

Interpretation Introduction

To determine: The structural formula for $1,4-\text{heptadiyne}$.

Interpretation: The structural formula for $1,4-\text{heptadiyne}$ is to be shown.

Concept introduction: Structural formulas are used to describe the arrangement of atoms, groups or substituents in a molecule, whereas molecular formula describes the total number and the type of atoms present in a molecule. The chemical structures are described by IUPAC name or common names. IUPAC names are totally different from common names because IUPAC names are applied at international level and it comprises suffix, prefix, numbers and other priority rules.

Answer to Problem 9.26SP

The structural formula for $1,4-\text{heptadiyne}$ had shown.

Explanation of Solution

The structural formula for $1,4-\text{heptadiyne}$ is shown in figure 9.

Figure 9

The structural formula for $1,4-\text{heptadiyne}$ consists of parent chain of seven carbon atoms having triple bonds at first and fourth carbon atoms.

(j)

Interpretation Introduction

To determine: The structural formula for $\text{vinylacetylene}$.

Interpretation: The structural formula for $\text{vinylacetylene}$ is to be shown.

Concept introduction: Structural formulas are used to describe the arrangement of atoms, groups or substituents in a molecule, whereas molecular formula describes the total number and the type of atoms present in a molecule. The chemical structures are described by IUPAC name or common names. IUPAC names are totally different from common names because IUPAC names are applied at international level and it comprises suffix, prefix, numbers and other priority rules.

Answer to Problem 9.26SP

The structural formula for $\text{vinylacetylene}$ had shown.

Explanation of Solution

The structural formula for $\text{vinylacetylene}$ is shown in figure 10.

Figure 10

The structural formula for $\text{vinylacetylene}$ comprises one double and one triple bond along with three carbon atoms.

(k)

Interpretation Introduction

To determine: The structural formula for $\left(S\right)-3-\text{methyl}-1-\text{penten}-4-\text{yne}$.

Interpretation: The structural formula for $\left(S\right)-3-\text{methyl}-1-\text{penten}-4-\text{yne}$ is to be shown.

Concept introduction: Structural formulas are used to describe the arrangement of atoms, groups or substituents in a molecule, whereas molecular formula describes the total number and the type of atoms present in a molecule. The chemical structures are described by IUPAC name or common names. IUPAC names are totally different from common names because IUPAC names are applied at international level and it comprises suffix, prefix, numbers and other priority rules.

Answer to Problem 9.26SP

The structural formula for $\left(S\right)-3-\text{methyl}-1-\text{penten}-4-\text{yne}$ had shown.

Explanation of Solution

The structural formula for $\left(S\right)-3-\text{methyl}-1-\text{penten}-4-\text{yne}$ is shown in figure 11.

Figure 11

The structural formula for $\left(S\right)-3-\text{methyl}-1-\text{penten}-4-\text{yne}$ consists of chain of five carbon atoms, double bond at first carbon atom and triple bond at fourth carbon atom.