Self-assembly of a highly stable, topologically interesting metallamacrocycle by bridging gold(I) ions with pyridyl-2,6-diphenyl 2- and diphosphanes

(Figure Presented) A Möbius arrangement of the bonds directly attached to a metallamacrocycle was observed for the AuI complex [Au 3(CNC)(μ-Ph2PCH2PPh2) 2]+, which was self-assembled by treating the lithium salt of pyridyl-2,6-diphenyl2- (CNC) with [Au2Cl 2(μ-Ph2PCH2PPh2)]. The trinuclear AuI complex has intramolecular Au⋯Au and C-C⋯π interactions, exhibits a remarkable stability in solution, and is cytotoxic toward cancer cell lines. © 2006 Wiley-VCH Verlag GmbH & Co. KGaA.link_to_subscribed_fulltex