There are three C5 alkanes, formula C5H12
pentane, CH3CH2CH2CH2CH3
, where five carbon atoms form a straight chain.
2-methylbutane, CH3CH(CH3)CH2CH3,
with one methyl branch on the second carbon of a four-carbon
chain
2,2-dimethylpropane, CH3C(CH3)2CH3,
with two methyl branches on the second carbon of a three carbon
chain.
There are five C6 alkanes, formula C6H14
hexane, CH3CH2CH2CH2CH2CH3
, where six carbon atoms form a straight chain.
2-methylpentane , CH3CH(CH3)CH2CH2CH3
, with one methyl branch on the second carbon
atom of a five-carbon chain.
3-methylpentane, CH3CH2CH(CH3)CH2CH3,
with one methyl branch on the third carbon atom of a
five-carbon chain.
2,3-dimethylbutane , CH3CH(CH3)CH(CH3)CH3
, with one methyl branch on the second carbon and one methyl
branch on the third carbon of a four-carbon chain.
2,2-dimethylbutane , CH3C(CH3)2CH2CH3
, with two methyl branches on the second carbon of a four-carbon
chain.
