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Helicene chiral hydrocarbon

Helicene chiral hydrocarbon

A705/0077

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Credit

LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY

Caption

Helicene molecule. A helicenes is a hydrocarbon formed of linked aromatic benzene rings. The rings are flat, but the physical presence of other rings in the structure forces the molecule into a spiral shape. As the spiral is set one way, either spiralling clockwise (as here) or anticlockwise, the molecule exhibits chirality. This means that it is non-superimposable on its mirror image. Most chiral molecules achieve this by having, for instance, four different side groups bonded to a central tetrahedral carbon atom. This is the case with most biological molecules. Helicenes are notable as they achieve chirality despite lacking these chiral centres.

Release details

Model release not required. Property release not required.

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