[FlamboyantEgg]

Hi everyone.

I was wondering whether 1,1-dimethylcyclobutane can have cis/trans forms?

I ask as my textbook makes it clear that 1,3-dimethylcyclobutane does have cis/tran, however with both bonds at the same carbon. Having drawn it a few times I can't see why it COULDN'T but I thought i'd make sure.

Cheers   

[mehc]

1,1 dimethylcyclobutane doesn't show cis trans isomerism. Geometric isomerism is only possible if substituents on either side of rigid barrier are different.