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What is the lowest molecular mass alkane that is chiral? Is there another alkane of the same molecular formula which is also chiral? If so, then give its structure also. |
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Answer» Solution :The lowest molecular mass alkane which is chiral must have a chiral CARBON which is attached to four DIFFERENT atoms/groups of lowest molecular mass, i.e., H, `CH_(3),CH_(3)CH_(2) and CH_(3)CH_(2)CH_(2)`. THEREFORE, the alkane is 3-methylhexane. Since the isomeric form of n-propyl group is isopropyl group, therefore, another alkane which is chiral is 2,3-dimethylpentane. `UNDERSET("3-Methylhexane")(CH_(3)CH_(2)-overset(CH_(3))overset(|)(.^(**)C)H-CH_(2)CH_(2)CH_(3))""underset("2,3-Dimethylpentane")(CH_(3)CH_(2)-overset(CH_(3))overset(|)(.^(**)C)H-overset(CH_(3))overset(|)(C)H-CH_(3))` |
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