138965-51-2

Basic information

• Product Name: Phosphonium, (3-chrysenylmethyl)triphenyl-, bromide
• CAS NO: 138965-51-2
• Molecular Formula: C37H28P.Br
• Molecular Weight: 583.507
• Mol File: 138965-51-2.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Phosphonium, (3-chrysenylmethyl)triphenyl-, bromide(CAS DataBase Reference)
• NIST Chemistry Reference: Phosphonium, (3-chrysenylmethyl)triphenyl-, bromide(138965-51-2)
• EPA Substance Registry System: Phosphonium, (3-chrysenylmethyl)triphenyl-, bromide(138965-51-2)

Safety Data

• Hazardous Substances Data: 138965-51-2(Hazardous Substances Data)

Upstream product

• 3351-31-3 3-methylchrysene 
• 138965-50-1 3-(Bromomethyl)chrysene 
• 603-35-0 triphenylphosphine 

Downstream Products

• 138965-54-5 cis-3-Styrylchrysene 
• 138965-55-6 trans-3-Styrylchrysene 

Relevant articles and documents

Triplet Intermediates in Cis-Trans Photoisomerization of 3-Chrysenylethylenes

The effect of substitution of 3-chrysenyl group (Ar) on unsaturated double bonds in their triplet sensitized isomerization was investigated for Ar-CH=CH-R, R = tBu (BC) and Ph (SC) by means of stationary irradiations, laser flash photolyses, and MO calculations.Both olefins undergo mutual isomerization between their cis- and trans-isomers.However, BC has a unique triplet energy surface with two decay funnels at the planar trans (3t*) and twisted (3p*) conformations, which are in equilibrium with each other; 3t* undergoes either unimolecular decay to the ground-state trans isomer or triplet energy transfer to the cis isomer (quantum chain process) and 3p* decays to the ground state to give the cis and trans isomers.Tn 1 absorptions observed for BC and SC are mainly attributed to 3t* and 3p*, respectively, on the basis of semiempirical MO calculations.The populations at 3t* and 3p* are estimated.