Heptacene
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| Preferred IUPAC name
Heptacene | |
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CompTox Dashboard (EPA)
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| Properties | |
| C30H18 | |
| Molar mass | 378.474 g·mol−1 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Heptacene is an organic compound and a polycyclic aromatic hydrocarbon and the seventh member of the acene or polyacene family of linear fused benzene rings.[1] This compound has long been pursued by chemists[2][3][4] because of its potential interest in electronic applications and was first synthesized but not cleanly isolated in 2006.[5][6] Heptacene was finally fully characterized in bulk by researchers in Germany and the United States in 2017.[7]
heptacene synthesis
The final step is a
Derivatives
Figure 1. 
Figure 2.
7,16-Bis(tris(trimethylsilyl)silylethynyl)heptacene was synthesized in 2005.[11] This compound is stable in the solid state for a week but decomposes in contact with air. Its synthesis started from anthraquinone and naphthalene-2,3-dicarboxaldehyde. More stable substituted heptacenes have been reported: with stabilizing p-(t-butyl)thiophenyl substituents (Figure 1)[12] and with phenyl and triisopropylsilylethynyl groups (Figure 2).[13]