Q21E

Write the structures for all the isomers of the $--{C_5}{H_{11}}$ alkyl group.

Verified

Answer

There are 7 structures made with ${C_5}{H_{11}}$ .

1Step 1:Determine the structurefor all the isomers

The chemical formula for a side chain with 5 carbon atoms and all saturated $C - C$ bonds is ${C_5}{H_{11}}$.
The atoms of $H$ are spread over 5 carbon atoms.
Because it's a side chain that's attached to the parent chain, there's one less $H$ atom.
The pentyl side chain is the first structure.
It is composed of five carbon atoms arranged in a straight chain.
(1-methyl) butyl is the second structure.
It has four carbon atoms in a straight chain, with a methyl branch on carbon 1.

(2-methyl)butyl is the structure of this molecule. It has a straight chain with four carbon atoms and a methyl group as a branch on carbon. 2.
(3-methyl)butyl is the fourth structure, with four carbon atoms in the straight chain and one methyl group on carbon 3 in the side chain.
The fifth structure is the (1,2-dimethyl)propyl group, which consists of three carbon atoms in a straight chain and two methyl branches on carbon atoms 1 and $2.$.
The (1,1-dimethyl)propyl group, which has three carbon atoms in a straight chain and two methyl branches on each carbon atom, is the sixth structure.
The (2,2-dimethyl)propyl group is the seventh structure, with three carbon atoms in a straight chain and two methyl branches on carbon atom 2.