Preparation, characterization and molecular electrical conductivity of an ion-pair complex and mixed-metallic coordination polymers derived from maleonitriledithiolate

An ion-pair complex [Cd(en)3]22+[Ag4(mnt)4]4− and three mixed metallic coordination polymers MNi(mnt)2 [M = Pd(II), 2Ag(I) or Hg(II); mnt2−=maleonitriledithiolate] have been prepared and characterized using IR, UV–Visible and conductivity techniques. All of the complexes exhibit pressed pellet σrt≃10−5 S cm−1 and show electrical behaviour of semiconductors over 303–393 K range.