Reactivity of [Re-3(mu-H)(3)(mu(3)-ampy)(CO)(9)](-). Preparation of heteronuclear Re3Au carbonyl cluster complexes containing face-capping and edge-bridging gold atoms

摘要

The reaction of the trirhenium anionic cluster [Re-3(mu-H)(3)(mu(3)-ampy)(CO)(9)](-) (1; Hampy = 2-amino-6-methylpyridine) with the cationic gold fragment [Au-(PPh3)](+) gives the neutral heteronuclear adducts [Re-3{mu(3)-Au(PPh3)}(mu-H)(3)(mu(3)-ampy)(CO)(9)] (2) and [Re-3{mu-Au(PPh3)}(mu(3)-H)(mu-H)(2)(mu(3)-ampy)(CO)(9)] (3). In compound 2, each hydride ligand spans an edge of the Re-3 triangle, which is capped by the gold atom, whereas in compound 3, the gold atom spans a Re-2 edge, two hydride ligands span the two symmetry-related Re-2 edges, and the remaining hydride ligand caps the Re2Au triangle. [References: 40]