This research investigates metal dimers of the type [(ligand)M-µ-bridge-M(ligand)][PF6]2, where M is a metal, for example, vanadium(II) (d3), chromium(II) (d4), nickel(II) (d8), or copper(II) (d9), and “bispicen” (N, N'-bis(2-pyridylmethyl) -1,2-ethanediamine) is used as ancillary ligand to ensure octahedral geometry around the metal centers. The magnetic behavior of these compounds will be investigated, both experimentally and computationally, in order to determine whether there is magnetic exchange between the metal ions through the bridging ligand. In the case of the naphthazarinate ion it is expected there will be magnetic ion exchange for compounds with metal ions that have unpaired electrons in the t2g orbitals (e.g. V(II) and Cr(II)). Meanwhile in the case of metal centers with unpaired electrons in eg orbitals (e.g. Ni(II) and Cu(II)) said magnetic exchange is not expected. This study provides insight into whether the orbital symmetry of naphthazarin allows interaction with the dxy, dxz and dyz orbitals of the metallic ions but not with the dx2-y2 and dz2 orbitals.

Magnetic exchange between ions of the first transition series in dimeric compounds using naphthazarin as bridging ligand

253rd National Meeting (2017)

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