Palladium(II) derivatives of alkylsulfanyl substituted thiophenes as precursors of inorganic polymers: Spectroscopic, electrochemical investigations and X-ray crystal structure of trans-PdCl2[3-(butylsulfanyl)thiophene]2

Pd(II) ions can coordinate sulfanyl sulfur atoms both in cis (1) and trans (2) configuration. Trans coordination is energetically favoured for 3-(n-butylsulfanyl)thiophene and 4,4′-bis(n-butylsulfanyl)-2,2′-bithiophene. A complex of polymeric nature is formed by the latter ligand.