Write an isomer of structure for a), b) and c) and name them.
a) 3,3-dimethylpentane
b)3-methyl-4-ethyl-1-hexyne
c)3,3,4-trimethyl-1-pentene
These are difficult to draw/write on this forum. I suggest you google "isomers of ......" and see if that won't give it to you.
To find the isomers for each of the given structures, we start by understanding the structural arrangement of atoms in the main chain of the molecule.
a) 3,3-dimethylpentane:
The main chain of this molecule is pentane, which consists of five carbon atoms in a straight chain. The "3,3" in the name suggests that there are two methyl groups attached to the third carbon atom. To create an isomer, we need to rearrange the position of the methyl groups.
One possible isomer is 2,2-dimethylpentane. In this isomer, both methyl groups are attached to the second carbon atom instead of the third.
b) 3-methyl-4-ethyl-1-hexyne:
Again, we start with the main chain, which is hexyne consisting of six carbon atoms in a straight chain. The name suggests that there is one methyl group attached to the third carbon atom and one ethyl group attached to the fourth carbon atom. To find an isomer, we can rearrange the position of the substituents.
One possible isomer is 4-methyl-3-ethyl-1-hexyne. In this isomer, the positions of the methyl and ethyl groups are swapped compared to the original structure.
c) 3,3,4-trimethyl-1-pentene:
Here, the main chain is pentene, which consists of five carbon atoms in a straight chain with a double bond between the first and second carbon atoms. The name indicates that there are three methyl groups attached to the third carbon atom and one methyl group attached to the fourth carbon atom. To find an isomer, we can rearrange the position of the methyl groups.
One possible isomer is 3,4,4-trimethyl-1-pentene. In this isomer, one of the methyl groups from the third carbon is moved to the fourth carbon while maintaining the position of the other two methyl groups.