non-identical. Diastereomers occur when the stereoisomers of a compound have differing configurations at corresponding stereocenters. EnantiomersStereoisomers which are nonsuperimposable, mirror images. See also Enantiomer Diastereomer Alkane stereochemistry Chiral resolution, which often involves crystallization Chirality (chemistry) (R/S, d/l) Chiral switch Skeletal formula#Stereochemistry which describes how stereochemistry is denoted in skeletal formulae. Solid-state chemistry VSEPR theory References Chemistry Jacobus Henricus van 't Hoff 1874 in science