A-level Chemistry/OCR (Salters)/Open-Book Paper/Stereochemistry in poly(propene)

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The three structural forms of poly(alkenes)[edit | edit source]

Isotactic[edit | edit source]

Isotactic polymers have all their R-groups pointing in the same direction.

Syndiotactic[edit | edit source]

Syndiotactic polymers have their R-groups pointing in alternating directions.

Atactic[edit | edit source]

Atactic polymers have no regularity in the direction of their R-groups.

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