Gj. Pindado et al., FACILE ALPHA-C-H ACTIVATION IN 14-ELECTRON ZIRCONIUM HALF-SANDWICH COMPOUNDS - EVIDENCE FOR A NEW CATALYST DEACTIVATION PATHWAY, Chemical communications, (6), 1997, pp. 609-610
The electron-deficient zirconium diene complex [Zr(Cp '')Me(C(4)H(4)Me
z-2,3)] [Cp '' = C5H3(SiMe(3))(2)-1,3] cleanly eliminates methane to g
ive an unusual dinuclear dienyl complex [Zr(Cp '')(mu-eta(1):eta(4)-C(
4)H(3)Me(2)-2,3)](2), characterised by a new type of mu-eta(1):eta(4)-
butadienyl coordination mode; the complex and its zwitterionic reactio
n product with B(C6F5)(3) provide support for catalyst deactivation pr
ocesses involving alkane elimination reactions.