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|Title:||Magnetic coupling in end-to-end azido-bridged copper and nickel binuclear complexes: a theoretical study||Authors:||Fabrizi De Biani, Fabrizia
Novoa, J. J.
|Issue Date:||2000||Project:||None||Journal:||INORGANIC CHEMISTRY||Abstract:||
The influence of structural parameters on the exchange coupling J between metal atoms in end-to-end azido-bridged binuclear complexes of Cu(II) and Ni(II) has been studied by means of density functional calculations. For the case of double-bridged Cu(II) compounds, four ideal pentacoordinate models have been employed in which the coordination spheres of the two metal atoms are either a trigonal bipyramid or a square pyramid, connected through equatorial or axial bridges. The distortion from those ideal geometries along a Berry pathway has also been analyzed. For the hexacoordinate Ni(II) compounds, models with two or one bridging ligands have been studied. The effect of the bridging M−N−N bond angles on the exchange coupling has been analyzed for both the Cu(II) and Ni(II) complexes.
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