129821-88-1

Basic information

• Product Name: Disilane, 1,2-bis(4-methylphenyl)-
• CAS NO: 129821-88-1
• Molecular Formula: C14H18Si2
• Molecular Weight: 242.468
• Mol File: 129821-88-1.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: Disilane, 1,2-bis(4-methylphenyl)-(CAS DataBase Reference)
• NIST Chemistry Reference: Disilane, 1,2-bis(4-methylphenyl)-(129821-88-1)
• EPA Substance Registry System: Disilane, 1,2-bis(4-methylphenyl)-(129821-88-1)

Safety Data

• Hazardous Substances Data: 129821-88-1(Hazardous Substances Data)

Upstream product

• 931-70-4 (4-methylphenyl)silane 
• 129821-90-5 Bromo-p-tolyl-silane 

Relevant articles and documents

Long-chain alkanes with an internal -H2Si-SiH2-linkage

1,2-Bis(p-tolyl)disilane (2) has been prepared through Wurtz-coupling of chloro(p-tolyl)silane using lithium metal. It was used as a precursor for 1,2-bis(trifluoromethanesulfonyloxy)disilane (1), which was obtained by treatment with two equivalents of trifluoromethanesulfonic acid. This intermediate was treated with n-BuLi, n-HexLi or n-OctMgBr to give the title compounds (n-CnH2n+1)SiH2-SiH2(n-CnH2n+1) (n = 4,6,8), 4a-c. Treatment of 2 with only one equivalent of triflic acid gave p-TolSiH2SiH2OSO2CF3 (5), which can be selectively converted into mixed alkyl-aryl-disilanes with LiR reagents, e.g. (n-Bu)SiH2SiH2(p-Tol), 6. The crystal structure of compound 2 has been determined by an X-ray diffraction study; it has a staggered trans-conformation with a crystallographic center of inversion.

Vibrational Spectra and Syntheses of Some Phenyl- and p-Tolyldisilanes

The infrared and Raman spectra of Ph3SiSiH3, Ph3SiSiD3, Ph2HSiSiHPh2, Ph2DSiSiDPh2, PhH2SiSiH2Ph and PhD2SiSiD2Ph are reported and assigned with the aid of a normal coordinate analysis (NCA).The syntheses and vibrational spectra of the p-tolyldisilanes pT