Magnetic and structural properties of a cyano-bridged 1D ruthenium(III)–nickel(II) coordination polymer

Reaction of [Ni(cyclam)](ClO4)2 (cyclam = 1,4,8,11-tetraazacyclotetradecane) with Na[Ru(salen)(CN)2] (2) (salen = ethylenebis(salicylimine)) generated the 1D coordination polymer [Ru(III)(salen)(CN)2][Ni(II)(cyclam)](ClO4) (1). X-ray diffraction studies of 1 revealed a structure consisting of alternating Ni(II) and Ru(III) ions bridged by cyanide ligands. The cyano C-terminus remained bound to the Ru(III) center while the perchlorate anion induced a deviation from linearity along the Ru–CN–Ni axis. Structural characterization of 2 disclosed a 2D framework where the sodium counterions bridge between [Ru(salen)(CN)2] units. Magnetic measurements of 1 indicate ferromagnetic coupling between Ni(II) and Ru(III) with no long-range magnetic order above 3 K.

Reaction of [Ni(cyclam)](ClO4)2 with Na[Ru(salen)(CN)2] generated a 1D coordination polymer whose structural composition consisted of alternating Ni(II) and Ru(III) ions bridged by cyanide ligands and whose magnetic properties indicated ferromagnetic coupling between Ni(II) and Ru(III).Figure optionsDownload as PowerPoint slide