How many structural isomers of $C_{6} H_{14}$ $C_6H_14$ are there?

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Answer 1 · 2017-06-28T06:08:04

I count 5 structural isomers of hexane, $C_{6} H_{14}$ $C_6H_14$ ..........

And these are.......

$(i)$ $(i)$ $n-hexane$ $"n-hexane"$ , $H_{3} {CCH}_{2} {CH}_{2} {CH}_{2} {CH}_{2} {CH}_{3}$ $"H"_3"CCH"_2"CH"_2"CH"_2"CH"_2"CH"_3$

$(i i)$ $(ii)$ $2-methylpentane$ $"2-methylpentane"$ , $H_{3} {CCH(CH}_{3} {)CH}_{2} {CH}_{2} {CH}_{3}$ $"H"_3"CCH(CH"_3")CH"_2"CH"_2"CH"_3$

$(i i i)$ $(iii)$ $3-methylpentane$ $"3-methylpentane"$ , $H_{3} {CCH}_{2} {CH(CH}_{3} {)CH}_{2} {CH}_{3}$ $"H"_3"CCH"_2"CH(CH"_3")CH"_2"CH"_3$

$(i v)$ $(iv)$ $2,2-dimethylbutane$ $"2,2-dimethylbutane"$ , $H_{3} {CCH}_{2} {C(CH}_{3})_{2} {CH}_{3}$ $"H"_3"CCH"_2"C(CH"_3")"_2"CH"_3$

$(v)$ $(v)$ $2,3-dimethylbutane$ $"2,3-dimethylbutane"$ , $H_{3} {CCH(CH}_{3} {)CH(CH}_{3} {)CH}_{3}$ $"H"_3"CCH(CH"_3")CH(CH"_3")CH"_3$

The way to remember these is to sit down with a molecular model set, and actually make models of each isomer.

How many structural isomers of C_6H_14C6H14C_6H_14 are there?