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C3H4Cl2 structural ismoerism's

The question I have set is: (italics mean subscript)
The chlorinated alkene, C3H4Cl2, has five structural isomerisms that are alkenes and two other structural ismoersims that are not alkenes.
Draw the five structural alkenes.

But I can come up with a total of 7 isomerism's if I include E and Z isomerism's and five without these. So do E Z isomerism's get disregarded and if so which ones am I meant to draw?!
Reply 1
How about cycles?
Reply 2
Original post by Pigster
How about cycles?


if you mean cyclos then I haven't included any of those as they have to remain as alkenes so I have 7 alkene isomerism's.
Reply 3
Aha, I should have read more carefully.

E/Z is stereoisomerism, NOT structural.

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