190-23-8

Basic information

• Product Name: dibenzo[f,l]phenanthro[9,10-i]pentahelicene
• Synonyms: Dibenzo(f,j)phenanthro(9,10-s)picene; Dibenzo[f,j]phenanthro[9,10-s]picene
• CAS NO: 190-23-8
• Molecular Formula: C₄₂H₂₄
• Molecular Weight: 528.64
• Mol File: 190-23-8.mol
• Article Data: 5

Chemical Properties

• Density: 1.333g/cm³
• Refractive Index: 1.916
• CAS DataBase Reference: dibenzo[f,l]phenanthro[9,10-i]pentahelicene(CAS DataBase Reference)
• NIST Chemistry Reference: dibenzo[f,l]phenanthro[9,10-i]pentahelicene(190-23-8)
• EPA Substance Registry System: dibenzo[f,l]phenanthro[9,10-i]pentahelicene(190-23-8)

Safety Data

• Hazardous Substances Data: 190-23-8(Hazardous Substances Data)

Upstream product

• 64065-98-1 cyclobutaphenanthrene-1,2-dione 
• 573-17-1 9-bromophenanthrene 
• 252054-91-4 10-(trimethylsilyl)phenanthren-9-yl trifluoromethanesulfonate 
• 2510-53-4 Phenanthrene-9,10-dicarboxylic anhydride 
• 36262-79-0 phenanthro[9,10-d][1,2,3]triazol-1-ylamine 
• 17219-94-2 9,10-dichlorophenanthrene 

Relevant articles and documents

The structure of hexabenzotriphenylene and the problem of overcrowded "D3h" polycyclic aromatic compounds

Hexabenzotriphenylene (1, dibenzo[f,j]phenanthro[9,10-s]picene) has been prepared in 5% yield by vacuum pyrolysis of phenanthrene-9,10-dicarboxylic anhydride, and its X-ray structure has been determined. Compound 1 is a strongly twisted, D3-symmetric molecular propeller, in contrast to other highly substituted triphenylenes (perfluoro- and perchlorotriphenylene) which adopt C2-symmetric conformations. Computational studies of these and other overcrowded, nominally D3h,-symmetric, polycyclic aromatic compounds are reported, and the origins of their conformational preferences and the adequacy of various computational methods for treating these compounds are discussed.

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Generation of nickel(0)-aryne and nickel(II)-biphenyldiyl complexes via in situ dehydrohalogenation of arenes. Molecular structures of

Reactions of the aromatic halides chlorobenzene, 9-bromophenanthrene and chloro-p-xylene with lithium 2,2,6,6-tetramethylpiperidide (LiTMP) in the presence of [Ni(η2-C2H4)(dcpe)] (1) generated the corresponding η2/su