How many cycloalkane isomers with ring size of four and five can be draw including cis-trans for molecular formula c6h12?

Answer 1

There are six different cycloalkane isomer possibilities for C5H10

1) cyclopentane

2) methylcyclobutane

3) 1,1-dimethylcyclopropane

4) cis-1,2-dimethylcyclopropane

5) trans-1,2-dimethylcyclopropane

6) ethylcyclopopane

*Note that #4 and #5 are cis/trans isomers of each other. They are not structural isomers, because they have their methyl groups connected on the same carbon atoms on the cyclopropane (they are just connected in different ways).

Answer 2

For a cycloalkane ring size of four, there are two isomers: cyclobutane and methylcyclopropane. Each can exist in a cis or trans configuration, so there are a total of four isomers for this ring size.

For a cycloalkane ring size of five, there are two isomers: cyclopentane and methylcyclobutane. Like the four-membered ring, each can exist in a cis or trans configuration, making a total of four isomers for the five-membered ring as well.

Answer 3

4 and 5 membered cycloalkanes only have one conformation. there are 2 conformations for cyclohexane.

Answer 4

5