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

Reaction of [Ni(cyclam)](ClO 4) 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). Reaction...

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Bibliographic Details
Published in:Polyhedron 2006-10, Vol.25 (14), p.2705-2709
Main Authors: Duimstra, Joseph A., Stern, Charlotte L., Meade, Thomas J.
Format: Article
Language:English
Subjects:
Coordination polymers
Crystal structure
Cyanides
Molecular magnetism
Nickel
Ruthenium
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Summary:Reaction of [Ni(cyclam)](ClO 4) 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). Reaction of [Ni(cyclam)](ClO 4) 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)](ClO 4) ( 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.
ISSN:0277-5387
DOI:10.1016/j.poly.2006.03.024