Picene

Picene

::"For the language, see North Picene and South Picene."Chembox new
Reference= ["Merck Index", 11th Edition, 7368.]
Name = Picene
ImageFile = Picene.svg
ImageSize = 218px
ImageName =
IUPACName = Dibenzo ["a","i"] phenanthrene
OtherNames = Picene
3,4-Benzchrysene
β,β-Binaphthylene ethene
Section1 = Chembox Identifiers
CASNo = 213-46-7
SMILES = c12ccccc1c3c(c(ccc5c4cccc5)c4cc3)cc2
Section2 = Chembox Properties
Formula = C22H14
MolarMass = 278.33 g/mol
Density = ? g/cm3
MeltingPt = 366-367 °C
BoilingPt = 518-520 °C

Picene is a hydrocarbon found in the pitchy residue obtained in the distillation of peat tar and of petroleum. This is distilled to dryness and the distillate repeatedly recrystallized from cymene. It may be synthetically prepared by the action of anhydrous aluminium chloride on a mixture of naphthalene and 1,2-dibromoethane, or by distilling a-dinaphthostilbene. It crystallizes in large colorless plates which possess a blue fluorescence. It is soluble in concentrated sulfuric acid with a green color. Chromic acid in glacial acetic acid solution oxidizes it to picene-quinone, picene-quinone carboxylic acid, and finally to phthalic acid.

References


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