Synthesis and Characterization of One-dimensional Dicyclohexyl-18-crown-6 Complexes with M2[Cd(mnt)2] (M = Na, K)

Two supramolecular crown ether complexes [Na(DC18C6-A)(H2O)]{[Na(DC18C6-A)][Cd(mnt)2]} (1) and [K(DC18C6-A)]2[Cd(mnt)2] (2) (DC18C6-A = cis-syn-cis-dicyclohexyl-18-crown-6, isomer A; mnt = maleonitriledithiolate) have been synthesized and characterized by elemental analysis, FT-IR spectroscopy and X-ray single crystal diffraction. Complex 1 is composed of one [Na(DC18C6-A)(H2O)]+ complex cation and one {[Na(DC18C6-A)][Cd(mnt)2]}− complex anion and displays an infinite chain-like structure through N–Na–N interactions. In complex 2, [K(DC18C6-A)]+ complex cation and [Cd(mnt)2]2− complex anion afford a novel 1D ladder-like structure by N–K–N, N–K–S interactions.