Reduction of chromium in ethylene polymerisation using bis(imido)chromium(VI) catalyst precursors.
Hybrid density functional calculations on [Cr(NR)2C3H7(C2H4)]+ (R = H, tBu) have revealed a facile reductive elimination reaction involving beta-hydrogen transfer from the alkyl chain, suggesting that the active species in ethylene polymerisation with bis(imido)chromium(VI) precursors contains a reduced chromium atom.
Department of Chemistry, University of Bergen, N-5007 Bergen, Norway. Vidar.Jensen@u-bourgogne.fr
Vidar R
VR
Jensen
Knut J
KJ
Børve