Are $cis$ and $trans$ isomers examples of diastereomers?

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Answer 1 · 2014-12-24T19:03:16

Yes, cis and trans isomers are examples of diastereomers.

We usually think of diastereomers as optical isomers that are not mirror images of each other.

But a diastereomer is any stereoisomer that is not an enantiomer.

www.chemguide.co.uk

The cis and trans isomers of but-2-ene are isomers that are not mirror images of each other, so they are diastereomers.

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Are ciscis and transtrans isomers examples of diastereomers?