Lösung:
The last molecule (f) is different from all others. Consider the longest possible carbon chain and see which carbon atoms have a decay. It can be observed with one carbon atom each.
The systematic nomenclature clearly helps to highlight the differences. Consider that the numbering of carbon atoms does not necessarily have to be done from left to right, but in such a way that: the sum of the branches should be as small as possible.
{a) } @:n(n,a,L:.4)<_(A&a,L&L,N0)$itemColor1(blue)\"&n\">@; @n(1,-70)\@n(2,50)<|>/@n(3,-30)<`|>\@n(4,50)/@n(5,-50)\@n(6,50)/@n(7,-50)\@n(8,50) | 2,3-Di-methyl octane | |
{b) } @:n(n,a,L:.4)<_(A&a,L&L,N0)$itemColor1(blue)\"&n\">@; @n(1,80)/@n(2,90)<`|>\@n(3,-90)<|>/@n(4,90)\@n(5,90)/@n(6,-90)\@n(7,45)|@n(8,90) | 2,3-Di-methyl octane | |
{c) } @:n(n,a,L:.4)<_(A&a,L&L,N0)$itemColor1(blue)\"&n\">@; @n(8,90)\@n(7,90)/@n(6,90)\@n(5,90)/@n(4,90)\@n(3,-90)<|@n(2,90)<`/@n(1,90)>\>/ | 2,3-Di-methyl octane | |
{d) } @:n(n,a,L:.4)<_(A&a,L&L,N0)$itemColor1(blue)\"&n\">@; /<`|@n(1,-90)>@n(2,90)\@n(3,-90)<|>/@n(4,90)\@n(5,90)/@n(6,90)\@n(7,90)/@n(8,90) | 2,3-Di-methyl octane | |
{e) } @:n(n,a,L:.4)<_(A&a,L&L,N0)$itemColor1(blue)\"&n\">@; @n(8,90)\@n(7,90)/@n(6,90)\@n(5,-90)|@n(4,90)`/@n(3,-90)<`\>|@n(2,90)<`/@n(1,90)>\ | 2,3-Di-methyl octane | |
{f) } @:n(n,a,L:.4)<_(A&a,L&L,N0)$itemColor1(blue)\"&n\">@; @n(8,-90)\@n(7,-90)|@n(6,90)`/@n(5,-90)|<`/>@n(4,90)\@n(3,90)/@n(2,90)<`|@n(1,-90)>\ | 2,4-Di-methyl octane |