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Large Zero‐Field Splittings of the Ground Spin State Arising from Antisymmetric Exchange Effects in Heterometallic Triangles |
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| Authors: | Samantha A Magee Dr Stephen Sproules Dr Anne‐Laure Barra Dr Grigore A Timco Nicholas F Chilton Prof David Collison Prof Richard E P Winpenny Prof Eric J L McInnes |
| Institution: | 1. School of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL (UK);2. Laboratoire National des Champs Magnétiques Intenses, UPR 3228 CNRS, UJF‐INSA‐UPS, BP 166, 38042 Grenoble Cedex 9 (France) |
| Abstract: | Ru2Mn(O)(O2CtBu)6(py)3] has an S=5/2 ground state with a very large zero‐field splitting (ZFS) of D=2.9 cm?1, as characterized by EPR spectroscopy at 4–330 GHz. This is far too large to be due to the MnII ion (D <0.2 cm?1), as shown from the {Fe2Mn} analogue, but can be modeled by antisymmetric exchange effects. |
| Keywords: | antisymmetric exchange electronic structure EPR spectroscopy exchange coupling zero‐field splitting |