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

The synthesis and X-ray structural characterization of two novel silver(I) coordination polymers, |Ag (NO3)(quin)|(n) (1) and |Ag-8(HL)(2)(H2O)(4)(mpyz)] center dot 3H(2)O (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 x 10(-4) Scm(-1) (1) and 1.6 x 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. (C) 2014 Elsevier Inc. All rights reserved.