Electrical conductivity and luminescence properties of two silver(I) coordination polymers with heterocyclic nitrogen ligands

Abstract

The synthesis and X-ray structural characterization of two novel silver(I) coordination polymers, [Ag(NO3)(quin)]n (1) and [Ag8(HL)2(H2O)4(mpyz)]·3H2O (2) are reported, where quin=5,6,7,8-tetrahydroquinoxaline, H6L=cyclohexane-1,2,3,4,5,6-hexacarboxylic acid and mpyz=2-methyl pyrazine. The single crystal diffraction analyses showed that complex 1 is a 2D layered structure, while 2 presents a 3D polymeric architecture. In complex 2 the network is stabilized by argentophilic interactions and hydrogen bonding. Electrical conductivity of order 3×10−4Scm−1 (1) and 1.6×10−4Scm−1 (2) is measured on thin film specimen at room temperature. The photoluminescence and thermal properties of the complexes have also been studied.