Synthesis of Triangular Tripalladium Cations as Noble-Metal Analogues of the Cyclopropenyl Cation

Authors


  • We thank the UPMC, CNRS, IUF (L.F. and M.M.), and ANR (Grant Credox) for funding. We thank Prof. Pierre Gouzerh for discussions and Yanling Li for SQUID measurements.

Abstract

The first C3-symmetric 44-core-valence-electron triangular palladium clusters, [{(SAr′)(PAr3)Pd}3]+, have been synthesized by activation of the C[BOND]S bond of isothioureas. Owing to delocalized metal–metal bonding, these stable complexes are the first noble-metal analogues of the π-aromatic cyclopropenyl cation [C3H3]+, with their all-metal aromaticity involving d-type atomic orbitals.

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