Which of the following terms best describes the stereochemical relationship of the two compounds shown below in Fischer notation?

Question

Quizplus · Accepted Answer

The compounds shown are not mirror images of each other, so they cannot be enantiomers. They also have different connectivity, so they cannot be constitutional isomers. They are not cis/trans isomers since there is no double bond present. Instead, they are diastereomers, meaning they have different stereochemical relationships at at least one, but not all, stereocenters.

Which of the Following Terms Best Describes the Stereochemical Relationship