A one-dimensional zigzag chain involving a cadmium(II)-imino nitroxide: structure and magnetic properties

Abstract

A novel one-dimensional complex salt with the formula [Cd(IM2py)2][Au(CN)2]2 (IM2py = 2-(2′-pyridinyl)-4,4,5,5-tetramethylimidazoline-1-oxyl), has been synthesized and its structure was determined by single-crystal X-ray diffraction methods. The coordination geometry around Cd(II) ion is a distorted octahedral. IM2py coordinates to Cd(II) via pyridyl- and imino-N atoms to form a planar, five-membered chelate ring. [Cd(IM2py)2][Au(CN)2]2 units are linked through weak Au ··· Au interactions, generating an infinite 1D zigzag chain. Magnetic studies show weak antiferromagnetic coupling between two radicals through the diamagnetic Cd(II) ion.