Hexacene

Dark green solid

380 ° C ( decomposition)

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Hexacene is a chemical compound from the group of acenes.

Preparation and Properties

The first synthesis of hexacene was reported in 1942 by Erich Clar. 1955, the compound was prepared by dehydrogenation of Hexacosadehydrohexacen by palladium-carbon. In 1982 it was reported that hexacene has a blue-green color and decomposes at 380 ° C. 2007, the first direct Hexacensynthese based on a photochemical decarbonylation of a Diketovorläufers was known:

Hexacene is very reactive and can only be isolated in a polymethyl methacrylate matrix. in pure form they can not be isolated because it dimerizes at low concentration in solution and react with oxygen to form organic peroxide. However, bis ( trialkylsilyl) are ethynylierte derivatives of hexacene stable and can be isolated as crystalline solids.