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Triangular Nickel Complexes Derived from 2‐Pyridylcyanoxime: An Approach to the Magnetic Properties of the [Ni3(μ3‐OH){pyC(R)NO}3]2+ Core |
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| Authors: | Jordi Esteban Prof. Eliseo Ruiz Dr. Mercé Font‐Bardia Dr. Teresa Calvet Prof. Albert Escuer |
| Affiliation: | 1. Departament de Química Inorgànica, Universitat de Barcelona, Av. Diagonal 645, 08028 Barcelona (Spain), Fax: (+34)?934907725;2. Departament de Química Inorgànica and Institut de Química Teòrica i Computacional, Universitat de Barcelona, Av. Diagonal 645, 08028 Barcelona (Spain);3. Departament de Cristallografia, Mineralogia i Diposits, Universitat de Barcelona, Martí I Franqués s/n, 08028 Barcelona (Spain) |
| Abstract: | A series of nickel complexes with nuclearity ranging from Ni3 to Ni6 have been obtained by treatment of a variety of nickel salts with the 2‐pyridylcyanoxime ligand. The reported compounds have as a common structural feature the triangular arrangement of nickel cations bridged by a central μ3‐oxo/alkoxo ligand. These compounds are simultaneously the first nickel derivatives of the 2‐pyridylcyanoxime ligand and the first examples of isolated, μ3‐O triangular pyridyloximate nickel complexes. Magnetic measurements reveal antiferromagnetic interactions promoted by the μ3‐O and oximato superexchange pathways and comparison of the experimental structural and magnetic data with DFT calculations give an in‐depth explanation of the factors that determine the magnetic interaction in this kind of system. |
| Keywords: | cluster compounds coordination chemistry density functional calculations magnetic properties nickel |