π-Face Donor Properties of N-Heterocyclic Carbenes in Grubbs II Complexes
作者:Steffen Leuthäußer、Volker Schmidts、Christina M. Thiele、Herbert Plenio
DOI:10.1002/chem.200800139
日期:2008.6.20
NEt2, H) and in the cathodic isomer the electron rich aryl ring is located above the Ru=CHPh unit. This orientational effect provides clear evidence for strong pi-pi through-space interactions in the RuIII complexes, assuming that the alternative through-bond transfer of electron density is equally efficient in both isomers.