144900-71-0

Basic information

• Product Name: Perchloro-4-benzylidenecyclohexadienone
• Synonyms: Perchloro-4-benzylidenecyclohexadienone
• CAS NO: 144900-71-0
• Molecular Weight: 526.672
• Mol File: 144900-71-0.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Perchloro-4-benzylidenecyclohexadienone(CAS DataBase Reference)
• NIST Chemistry Reference: Perchloro-4-benzylidenecyclohexadienone(144900-71-0)
• EPA Substance Registry System: Perchloro-4-benzylidenecyclohexadienone(144900-71-0)

Safety Data

• Hazardous Substances Data: 144900-71-0(Hazardous Substances Data)

Upstream product

• 3225-61-4 perchlorodiphenylmethyl radical 

Relevant articles and documents

Photochemical Behavior of Stable Free Radicals: The Photochemistry of Perchlorodiphenylmethyl Radical

The excitation of perchlorodiphenylmethyl radical (PDM) at 530 nm leads to the lowest excited doublet, D1 (τ = 31 ns), from which emission is observed (Φ = 1 x 10-3 +/- 0.0003).This state is quenched by electron donors and acceptors at a rate at or close to diffusion control and at much slower rates by oxygen and hydrogen atom donors.Fragmentation of PDM (Φd = 0.06) occurs from a higher excited doublet (Dn, n > = 2) producing intermediates that are trapped by O2, chlorine, or hydrogen donors, yielding products 1-6.Experimental evidence suggests a structure-photoreactivity correlation in the perchlorinated arylmethyl radicals in which the partitioning between photochemical cyclization or fragmentation depends on the twist angle between the appended phenyl rings.