292868-56-5

Basic information

• Product Name: C₂₂H₁₂Br₂
• Synonyms: C₂₂H₁₂Br₂
• CAS NO: 292868-56-5
• Molecular Weight: 436.145
• Mol File: 292868-56-5.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: C₂₂H₁₂Br₂(CAS DataBase Reference)
• NIST Chemistry Reference: C₂₂H₁₂Br₂(292868-56-5)
• EPA Substance Registry System: C₂₂H₁₂Br₂(292868-56-5)

Safety Data

• Hazardous Substances Data: 292868-56-5(Hazardous Substances Data)

Upstream product

• 38274-16-7 2-bromo-1-(trimethylsilylethynyl)benzene 
• 3989-13-7 2-(3-bromophenyl)ethynyltrimethylsilane 
• 766-46-1 2-bromo-1-ethynylbenzene 
• 766-81-4 3-bromophenylacetylene 
• 292868-54-3 1-(2-bromophenyl)-2-(4-iodophenyl)ethyne 
• 583-55-1 1-Bromo-2-iodobenzene 
• 591-18-4 1-Bromo-3-iodobenzene 

Relevant articles and documents

Ferromagnetic spin alignment in head-to-tail coupled oligo(1,4-phenyleneethynylene)s and oligo(1,4-phenylenevinylene)s bearing pendant p-phenylenediamine radical cations

The intramolecular and long-range ferromagnetic coupling between p-phenylenediamine radical cations in head-to-tail coupled oligo(1,4-phenyleneethynylene)s and oligo(1,4-phenylenvinylene)s between neighbors and next-nearest neighbors is described. UV/vis/near-IR experiments show that the radical cations are localized in the pendant p-phenylenediamine units of the conjugated oligomers. The ESR spectra of these oligo(1,4-phenyleneethynylene) and oligo(1,4-phenylenvinylene) di(radical cation)s are consistent with those of a triplet state. A linear behavior is observed for the doubly integrated ESR intensity of the ΔM(s) = ±1 and ΔM(s) = ±2 signals with the inverse temperature (I ~ 1/T), consistent with Curie's law. This behavior indicates a triplet ground-state diradical with a large triplet-singlet energy gap or possibly a degeneracy of singlet and triplet states.