3D model (Jmol)
|Molar mass||248.39 g/mol|
|Appearance||pale yellow solid|
|Melting point||93-95 °C|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
Terthiophene is the organic compound with the formula [C4H3S]2C4H2S. It is an oligomer of the heterocycle thiophene, a shorter oligomer is dithienyl, and the parent polymer is polythiophene. In the most common isomer of terthiophene, two thienyl groups are connected via their 2 positions to a central thiophene, also at the carbon atoms flanking the sulfur.
Preparation of terthiophene
Properties and applications
This isomer is a pigment in African marigolds (Tagetes spp.) and exhibits some biological activity because it sensitizes the formation of singlet oxygen. It is responsible for the insecticidal activity of Tagetes minuta.
Together with derivatives of 2,2'-bithiophene, various substituted terthiophenes occur naturally. Examples include 5,5''-dichloro-α-terthiophene, 5-chloro-α-terthiophene, 5-acetyl α-terthiophene, and 5-carboxyl bithiophene.
Terthiophene has been employed as building block for the organic semi-conductor polythiophene.
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