Molecular wheels of ruthenium and osmium with bridging chalcogenolate ligands: edge-shared-octahedron structures and metal-ion binding

Abstract

Inventing new wheels: Reaction of [M 3(CO) 12] (M=Ru, Os) with 4-RC 6H 4SH afforded [{M(S-4-RC 6H 4) 2(CO) 2} 8] (R=H; I) or [{M(S-4-RC 6H 4) 2(CO) 2} 6] (R=Me, iPr; II; see scheme), all of which have been structurally characterized. The octamers I are unique metal molecular wheels featuring skew-edge-shared octahedra with a central planar M 8 octagon. [{Ru(S-4-iPrC 6H 4) 2(CO) 2} 6] selectively binds a Cu + or Ag + ion to form [M′{Ru(S(4-iPr- C 6H 4)) 2(CO) 2} 6] + (III). Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.