Mao. Volland et al., Facile synthesis of a ruthenium carbene complex with a cis-chelating diphosphinoethane ligand, J ORGMET CH, 617(1), 2001, pp. 288-291
The neutral carbene complex ((Bu2PCH2CH2PBu2)-Bu-t-Bu-t-kappa P-2)Cl2Ru=CHP
h (1) with bis(di-t-butylphosphino)ethane (dtbpe) as a cis-chelating ligand
is easily accessible from commercially available trans-(PCy3)(2)Cl2Ru=CHPh
by phosphine exchange. Its structure in the solid state was determined by
single crystal X-ray diffraction. Structural features of this compound in s
olution were elucidated by various NMR experiments. (C) 2001 Elsevier Scien
ce B.V. All rights reserved.