39969-30-7

Basic information

• Product Name: Benzene, 1,1'-(1,2-ethynediyl)bis[4-heptyl-
• Synonyms: p,p'-Bis-(n-heptyl)-tolan;Benzene,1,1'-(1,2-ethynediyl)bis[4-heptyl
• CAS NO: 39969-30-7
• Molecular Formula: C28H38
• Molecular Weight: 374.60100
• Mol File: 39969-30-7.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 490.1±34.0 °C(Predicted)
• Density: 0.95±0.1 g/cm3(Predicted)
• CAS DataBase Reference: Benzene, 1,1'-(1,2-ethynediyl)bis[4-heptyl-(CAS DataBase Reference)
• NIST Chemistry Reference: Benzene, 1,1'-(1,2-ethynediyl)bis[4-heptyl-(39969-30-7)
• EPA Substance Registry System: Benzene, 1,1'-(1,2-ethynediyl)bis[4-heptyl-(39969-30-7)

Safety Data

• Hazardous Substances Data: 39969-30-7(Hazardous Substances Data)

Upstream product

• 131894-91-2 1-(n-heptyl)-4-iodobenzene 
• 79887-12-0 1-ethynyl-4-heptylbenzene 

Relevant articles and documents

Understanding the Polymerization of Diphenylacetylenes with Tantalum(V) Chloride and Cocatalysts: Production of Cyclic Poly(diphenylacetylene)s by Low-Valent Tantalum Species Generated in Situ

A systematic investigation of the polymerization of representative diphenylacetylenes with TaCl5and cocatalysts suggested that low-valent Ta species, which are formed by in situ reduction of TaCl5by the cocatalysts, are involved in the polymerization and that the polymerization reaction proceeds by an insertion ring expansion mechanism via the formation of tantalacyclopentadiene intermediates, rather than the previously considered metathesis mechanism. This polymerization mechanism indicates the production of unprecedentedcis-stereoregular cyclic poly(diphenylacetylene)s. Indeed, the possibilities of a cyclic structure and highcis-stereoregularity of the resulting polymers were reasonably supported by the results of their detailed atomic force microscopy (AFM) and NMR analyses, respectively.