Isomers that are related to each other by either rotations of double bonds, or alterations of chiral centres are stereoisomers.
Stereoisomers are molecules which differ only in the three-dimensional arrangement of their constituent atoms
Molecules with the same atoms and bond structure, but different three dimensional arrangements of atoms. For example, the CH3 groups in CH3CH=CHCH3 can be placed on the same side of the double bond in one stereoisomer and on opposite sides in another.
a compound that has the same composition and the same order of atomic bonds, but different molecular arrangements
an isomer of a reference molecule that has the same atom-to-atom connections as the reference molecule, but has a shape that is nonsuperimposable with it
a pair of molecules that are mirror images of each other, same formula but arranged differently
Isomers with the same structure by different configuration. See also isomer.
another name for configurational isomer.