Assembly of a heterobinuclear 2-D network: A rare example of endo- and exocyclic coordination of Pd-II/Ag-I in a single macrocycle

Abstract

The S3O2 macrocycle L-1 was synthesized by a dithiol-dihalide coupling reaction under high-dilution conditions. The reaction of L-1 with K2PdCl4 afforded an exocoordinated complex 1, [cisCl(2)Pd(L-1)], which can then be manipulated to provide a heterobinuclear complex 3, J[Pd(L-1)Ag(NO3)(2.5)](NO3)(0.5)}(n), utilizing endocyclic Pd-II and exocyclic Ag-I in a single macrocycle through a successive reaction with AgNO3. The network of 3 contains a unique honeycomb-like 2-D sheet made up of the repeating unit [Ag-6(NO3)(6)].