CAS No 1109-15-5 , tris(2,3,4,5,6-pentafluorophenyl)borane

Title: Tris(pentafluorophenyl)boron
CAS Registry Number: 1109-15-5
CAS Name: Tris(pentafluorophenyl)borane
Molecular Formula: C18BF15
Molecular Weight: 511.98
Percent Composition: C 42.23%, B 2.11%, F 55.66%
Literature References: Lewis acid catalyst. Prepn and characterization: A. G. Massey, A. J. Park, J. Organomet. Chem. 2, 245 (1964); and NMR study of adducts: eidem, ibid. 5, 218 (1966). Catalytic role in olefin polymerization: X. Yang et al., J. Am. Chem. Soc. 116, 10015 (1994). Lewis acid properties: H. Jacobsen et al., Organometallics 18, 1724 (1999). Prepn and properties of B(C6F5)3 radical anion: R. J. Kwaan et al., ibid. 20, 3818 (2001). Review of chemistry and uses: W. E. Piers, T. Chivers, Chem. Soc. Rev. 26, 345-354 (1997).
Properties: White solid, mp 126-128°. Sol in many organic solvents. Monomeric in benzene at 30°. Hygroscopic. Thermally stable.
Melting point: mp 126-128°
Use: Catalyst in organic transformations; cocatalyst with group IV metallocene alkyls in olefin polymerization.