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A ball-and-stick model of syndiotactic polypropylene.

A syndiotactic macromolecule in polymer chemistry is a tacticity essentially comprising alternating enantiomeric configurational base units which have chiral or prochiral atoms in the main chain in a unique arrangement with respect to their adjacent constitutional units. In a syndiotactic macromolecule, the configurational repeating unit consists of two configurational base units that are enantiomeric. A syndiotactic macromolecule consists of racemo diads.

See also