Why only 3 isomers of bromopentane are possible?
Asked by
| 28th Mar, 2013,
11:35: AM
Expert Answer:
There are numerous possible constitutional isomers of bromopentane. Specifically, the bromine atom can be attached to any of the carbon atoms (although there are only three unique possibilities because the 2 end carbons are identical). So you could have:
1-bromopentane
2-bromopentane
3-bromopentane
Then you can also have different connectivity between the carbon atoms. So pentane can either be normal pentane (5 carbons in a row), or it can be a branched structure. There is only one unique branched structure for pentane, which is called 2-methylbutane. So, starting with this branched version of pentane, you could have:
1-bromo-2-methylpentane
2-bromo-2-methylpentane
2-bromo-3-methylpentane
1-bromo-3-methylpentane
1-bromopentane
2-bromopentane
3-bromopentane
Then you can also have different connectivity between the carbon atoms. So pentane can either be normal pentane (5 carbons in a row), or it can be a branched structure. There is only one unique branched structure for pentane, which is called 2-methylbutane. So, starting with this branched version of pentane, you could have:
1-bromo-2-methylpentane
2-bromo-2-methylpentane
2-bromo-3-methylpentane
1-bromo-3-methylpentane
Answered by
| 31st Mar, 2013,
06:38: AM
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