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

• 1 is 2D layered while 2 present a 3D polymeric architecture.
• The network in 2 is stabilized by argentophilic interactions and hydrogen bonding.
• Electrical conductivity measurement is quite interesting.
• Argentophilic interaction and intra-ligand π⁎–π CT explains emission behavior of 2.

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 3×10−4 Scm−1 (1) and 1.6×10−4 Scm−1 (2) is measured on thin film specimen at room temperature. The photoluminescence and thermal properties of the complexes have also been studied.

Two new 1D and 3D coordination polymers of Ag(I) have been synthesized and characterized by X-ray analysis. The electrical, luminescence and thermal properties have been studied. Figure optionsDownload as PowerPoint slide