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Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: FlamboyantEgg on August 07, 2010, 01:28:36 PM

Title: 1,1-dimethylcyclobutane
Post by: FlamboyantEgg on August 07, 2010, 01:28:36 PM

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   ;D

Title: Re: 1,1-dimethylcyclobutane
Post by: mehc on August 08, 2010, 04:45:40 AM

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