Photoluminescent two-dimensional gold(I) polymers bearing a macrocyclic tetraaza cavity

Abstract

Several novel two-dimensional gold(I) polymers with the repeating (AuX)₄L [L = 1,4,8,11-tetra(diphenylphosphinomethyl)-1,4,8,11-tetraazacyclotetradecane, XCl, Br, I] units held together by weak metal⋯metal interactions are prepared; the structure of [(AuCl)₄L] characterized by X-ray crystal analysis shows the closest intermolecular gold(I)⋯gold(I) separation to be 3.104(1)Å; these polymers show interesting multistate photoluminescence in the solid state.