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Structural formula
Structural formula of Corons
Surname Corons
other names
  • Hexabenzobenzene
  • [6] -Circulen
  • Super benzene
Molecular formula C 24 H 12
Brief description

yellow to green powder

External identifiers / databases
CAS number 191-07-1
EC number 205-881-7
ECHA InfoCard 100.005.348
PubChem 9115
ChemSpider 8761
Wikidata Q420614
Molar mass 300.36 g mol −1
Physical state


Melting point

438-440 ° C

boiling point

525 ° C


almost insoluble in water

safety instructions
GHS labeling of hazardous substances
no GHS pictograms
H and P phrases H: no H-phrases
P: no P-phrases
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Coronene ( hexabenzobenzene ) belongs to the polycyclic aromatic hydrocarbons , more precisely to the circulenes . The molecule consists of six fused benzene rings (although when using the circle to denote aromatic rings, some authors also put a seventh circle in the inner ring).

Coronen was first represented synthetically by Kurt Meyer in 1932 .


Like most polycyclic aromatic molecules, coronene occurs in coal tar and in products of incomplete combustion, and also in the mineral carpathite .


Coronene is a yellow to gold powder made of thread-like particles or needle-like crystals. The solid melts at 438-440 ° C, boils at 525 ° C, is insoluble in water and soluble in non-polar solvents with slightly blue fluorescence. Coronene is very stable and has a very low vapor pressure . The coronene molecule is about 1 nanometer in size; it can be made visible with a scanning tunneling microscope .

Individual evidence

  1. a b c d Coronen data sheet at Acros, accessed on February 21, 2010.
  2. Coronene data sheet at Sigma-Aldrich , accessed on May 9, 2017 ( PDF ).
  3. Roland Scholl, Kurt Meyer: Synthesis of the anti-diperi -dibenz-coronens and its degradation to coronene (hexabenzo-benzene). (Collaborated by Horst v. Hoeßle and Solon Brissimdji). In: Reports of the German Chemical Society (A and B Series). 65, 1932, pp. 902-915, doi : 10.1002 / cber.19320650546 .
  4. Entry on pendletonite. In: Römpp Online . Georg Thieme Verlag, accessed on June 7, 2014.