3924-44-5

Basic information

• Product Name: Phenalenyl
• CAS NO: 3924-44-5
• Molecular Formula: C13H9
• Molecular Weight: 165.214
• Mol File: 3924-44-5.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: Phenalenyl(CAS DataBase Reference)
• NIST Chemistry Reference: Phenalenyl(3924-44-5)
• EPA Substance Registry System: Phenalenyl(3924-44-5)

Safety Data

• Hazardous Substances Data: 3924-44-5(Hazardous Substances Data)

Upstream product

• 203-80-5 phenalene 
• 98-83-9 isopropenylbenzene 
• 6840-31-9 naptho[1’,8a’,8’:bc]-bicyclo[3.1.0]hex-2-ene 

Relevant articles and documents

Bimolecular Formation of Radicals by H-Transfer, 2. - H-Transfer Reactions of Phenalene

The uncatalysed H transfer from phenalene (7) to α-methylstyrene (2) and the selfreaction (d) of phenalene (7) are quantitative transformations in the presence of an excess of 9,10-dihydroanthracene (1) (DHA) in diphenyl ether at 200 - 250 deg C.In this system phenalene (7) is consumed only in reaction (d) because the phenalenyl radicals (9) are captured by DHA (1) to give phenalene (7) and 9,10-dihydroanthryl radicals (3).The latter disproportionate rapidly.Accordingly, phenalene (7) acts as a catalyst for the hydrogenation of α-methylstyrene (2) by DHA (1).The activation parameters of the two reactions (e) and (d) were obtained from kinetic experiments between 200 - 250 deg C.They allow the determination of the C-H bond enthalpy ΔHdiss of phenalene (7) (65.3 kcal mol-1) at the methylene position.Key Words: Hydrogen transfer / Radical formation, molecule induced / C-H bond dissociation enthalpies, determination of / Catalysis / Coal pyrolysis / Phenalene