Heptacene

Structural formula
General
Surname	Heptacene
Molecular formula	C 30 H 18
External identifiers / databases
PubChem	5460712
Wikidata	Q1572618
properties
Molar mass	378.46 g mol −1
safety instructions
GHS hazard labeling ; no classification available
GHS hazard labeling ; no classification available
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Heptacene is a chemical organic compound with the molecular formula C ₃₀ H ₁₈ . The very reactive substance belongs to the group of polycyclic aromatic hydrocarbons and is made up of seven condensed benzene rings . It was first described by Erich Clar . It was first presented (but not isolated ) in 2006. Its dication can be obtained and stored from heptacene dimers in concentrated sulfuric acid at room temperature. Heptacene forms black-green crystals. Further research that u. a. for the organic electronics could be interesting ongoing.

literature

Christina Tönshoff, Holger F. Bettinger: Beyond Pentacenes: Synthesis and Properties of Higher Acenes. In: Topics in Current Chemistry 2013, doi : 10.1007 / 128_2013_437 .

Individual evidence

↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
^ Rajib Mondal, Bipin K. Shah, Douglas C. Neckers: Photogeneration of Heptacene in a Polymer Matrix . In: Journal of the American Chemical Society , 2006 ; Volume 128, Issue 30, pp. 9612-9613 ( doi : 10.1021 / ja063823i ).
↑ Ralf Einholz, Holger F. Bettinger: Heptacene: increased stability of a polycyclic aromatic hydrocarbon with 4n + 2 π electrons through oxidation to its dication with 4n π electrons . In: Angewandte Chemie , 2013 ; Volume 125, Issue 37, pp. 10000-10003 ( doi : 10.1002 / anie.201209722 ).
^ M. Hesse, H. Meier, B. Zeeh: Spectroscopic methods in organic chemistry , 7th edition, Georg Thieme Verlag, Stuttgart 2005, ISBN 978-3-13-576107-7 , p. 17.
↑ Sanjio S. Zade and Michael Bendikov: Beyond Heptacene: the longest characterized Acenes . In: Angewandte Chemie , 2010 ; Volume 122, Issue 24, pp. 4104-4107 ( doi : 10.1002 / anie.200906002 ).

[NV-1] This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.

[2] Rajib Mondal, Bipin K. Shah, Douglas C. Neckers: Photogeneration of Heptacene in a Polymer Matrix . In: Journal of the American Chemical Society , 2006 ; Volume 128, Issue 30, pp. 9612-9613 ( doi : 10.1021 / ja063823i ).

[3] Ralf Einholz, Holger F. Bettinger: Heptacene: increased stability of a polycyclic aromatic hydrocarbon with 4n + 2 π electrons through oxidation to its dication with 4n π electrons . In: Angewandte Chemie , 2013 ; Volume 125, Issue 37, pp. 10000-10003 ( doi : 10.1002 / anie.201209722 ).

[4] M. Hesse, H. Meier, B. Zeeh: Spectroscopic methods in organic chemistry , 7th edition, Georg Thieme Verlag, Stuttgart 2005, ISBN 978-3-13-576107-7 , p. 17.

[5] Sanjio S. Zade and Michael Bendikov: Beyond Heptacene: the longest characterized Acenes . In: Angewandte Chemie , 2010 ; Volume 122, Issue 24, pp. 4104-4107 ( doi : 10.1002 / anie.200906002 ).