Concepedia

Oxidation State(s) of the Active Titanium Species during Polymerization of Styrene to Syndiotactic Polystyrene Catalyzed by Cp*TiMe<sub>3</sub>/B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>, Cp*TiMe<sub>3</sub>/[Ph<sub>3</sub>C][B(C<sub>6</sub>F<sub>5</sub>)<sub>4</sub>], and Cp*TiCl<sub>2,3</sub>/MAO

Edan F. Williams, Michael C. Murray, Michael C. Baird

Macromolecules · 1999 · 55 citations · 35 references

DOI

Concepts

Abstract

A combined NMR/EPR investigation of the catalyst systems Cp*TiMe 3 /B(C 6 F 5 ) 3, Cp*TiMe 3 /[Ph 3 C][B(C 6 F 5 ) 4 ], and Cp*TiCl 2,3 /MAO for the polymerization of styrene to syndiotactic polystyrene suggests that evidence for the involvement of EPR-active titanium(III) species as catalysts is ambiguous.

References

35

Crystalline syndiotactic polystyrene

Nobuhide Ishihara, Toshiko Seimiya, M. Kuramoto et al. · Macromolecules · 1986 · 868 citations

, , +12

Perfluorophenyl derivatives of the elements

A.G. Massey, A.J. Park · Journal of Organometallic Chemistry · 1964 · 640 citations

, , +2

Stereospecific polymerization of styrene giving the syndiotactic polymer

Nobuhide Ishihara, M. Kuramoto, M. Uoi · Macromolecules · 1988 · 545 citations

, , +11

Isospecific polymerization of propylene catalyzed by rac-ethylenebis(indenyl)methylzirconium cation

James C. W. Chien, Woei Min Tsai, Marvin D. Rausch · Journal of the American Chemical Society · 1991 · 520 citations

, , +10

Reactions of trimethylsilylcyclopentadiene derivatives with titanium, niobium, and tantalum halides

Ana M. Cardoso, Robin J. H. Clark, Stephen Moorhouse · Journal of the Chemical Society Dalton Transactions · 1980 · 172 citations

, , +14