91影视

A nomenclature system is useful for naming simple organic molecules. It often fails for more complex molecules, in which case systematic or IUPAC nomenclature is preferable.

A name composed of words or symbols that precisely describe chemical structure, thus allowing the structure of a chemical to be derived from its name.

(a)The molecular formula of phenyl formate is ${\mathbf{C}}_7{\mathbf{H}}_6{\mathbf{O}}_2$

One phenyl ring and an ester functional group is present in phenyl formate, as the name indicates. So, the structure is:

Structure of phenyl formate

(b)The molecular formula of cyclohexyl benzoate is ${\mathbf{C}}_{13}{\mathbf{H}}_{16}{\mathbf{O}}_2$.

As the name indicates, it is having an ester group attached to benzene ring and to which a cyclohexane ring is also attached.

The structure is as follows:

Structure of cyclohexyl benzoate

(c)The molecular formula of cyclopentyl phenylacetate is ${\mathbf{C}}_{13}{\mathbf{H}}_{16}{\mathbf{O}}_2$

As the name indicates, it is having an acetate group attached to benzene ring and to which a cyclopentane ring is also attached.

The structure is as follows:

Structure of cyclopentyl phenylacetate

(d)The molecular formula of N-butylacetamide is ${\mathbf{C}}_6{\mathbf{H}}_{13}\mathbf{NO}$. It has one amide group attached to a butane chain.

Structure of N-butylacetamide

(e)The molecular formula of N,N-dimethylformamide is ${\mathbf{C}}_3{\mathbf{H}}_7\mathbf{NO}$.

Amide group is present, to which two methyl groups are attached.

Structure of N,N-dimethylformamide

(f)The molecular formula of benzoic propionic anhydride is ${\mathbf{C}}_{10}{\mathbf{H}}_{10}{\mathbf{O}}_3$.

It is having a benzene ring attached to an anhydride group.

Structure of benzoic propionic anhydride

(g) The molecular formula of benzamide is${\mathbf{C}}_7{\mathbf{H}}_7\mathbf{NO}\mathbf{}{\mathbf{C}}_7{\mathbf{H}}_7\mathbf{NO}$.

It has an linkage between amide group and benzene ring.

Structure of benzamide

(h)The molecular formula of-hydroxyvaleronitrile is ${\mathbf{C}}_5{\mathbf{H}}_9\mathbf{NO}$.

An alcohol and a cyanide group is present. Alcohol is attached to gamma carbon. The structure is as follows:

Structure of gamma-hydroxyvaleronitrile

(i)The molecular formula ofis ${\mathbf{C}}_4{\mathbf{H}}_6\mathbf{CIBrO}$

It is having a four carbon chain including aceyl carbon. Bromo group is attached to alpha carbon. The structure of given compound is as follows:

Structure of alpha-bromobutyrylchloride

(j)The molecular formula of beta-butyrolactone is${\mathbf{C}}_4{\mathbf{H}}_6{\mathbf{O}}_2$ .

The compound is having a lactone functional group. It is a four carbon chain compound, to which 鈥淥-atom鈥� is attached on beta carbon. It鈥檚 structure is as follows:

Structure of beta-butyrolactone

(k) The molecular formula of phenyl isocynate is ${\mathbf{C}}_7{\mathbf{H}}_5\mathbf{NO}$.

The compound is having an isocyanate group attached to a benzene ring. It鈥檚 structure is as follows:

Structure of phenyl isocyanate

(l) The molecular formula of cyclobutyl ethyl carbonate is ${\mathbf{C}}_7{\mathbf{H}}_{12}{\mathbf{O}}_3$.

It is having following structure.

Structure of cyclobutyl ethyl carbonate

(m) The molecular formula of $\mathbf{未}鈭�\mathbf{caprolactam}$is ${\mathbf{C}}_6{\mathbf{H}}_{11}\mathbf{NO}$.

Capro indicates six carbons. It鈥檚 structure is as follows:

Structure of delta-caprolactum

(n)The molecular formula of trichloroacetic anhydride is ${\mathbf{C}}_4{\mathbf{CI}}_6{\mathbf{O}}_3$.

The compound is having all the terminal hydrogens replaced with Cl. It is having following structure.

Structure of trichloroacetic anhydride

(o)The molecular formula of ethyl N-methyl carbamate ${\mathbf{C}}_4{\mathbf{H}}_9{\mathbf{NO}}_2$.

Structure of N-methylcarbamate