Slow Magnetic Relaxation and Single‐Molecule Toroidal Behaviour in a Family of Heptanuclear {CrIIILnIII6} (Ln=Tb,Ho, Er) Complexes |
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| Authors: | Dr Kuduva R Vignesh Dr Stuart K Langley Abinash Swain Dr Boujemaa Moubaraki Dr Marko Damjanovi? Prof Wolfgang Wernsdorfer Prof Gopalan Rajaraman Prof Keith S Murray |
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| Institution: | 1. IITB-Monash Research Academy, IIT Bombay, Mumbai, Maharashtra, India;2. School of Science and the Environment, Division of Chemistry, Manchester Metropolitan University, Manchester, UK;3. Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, Maharashtra, India;4. School of Chemistry, Monash University, Clayton, Victoria, Australia;5. Institute Néel, CNRS, Université Grenoble Alpes, Grenoble, France;6. Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, Germany |
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| Abstract: | The synthesis, magnetic properties, and theoretical studies of three heterometallic {CrIIILnIII6} (Ln=Tb, Ho, Er) complexes, each containing a metal topology consisting of two Ln3 triangles connected via a CrIII linker, are reported. The {CrTb6} and {CrEr6} analogues display slow relaxation of magnetization in a 3000 Oe static magnetic field. Single‐crystal measurements reveal opening up of the hysteresis loop for {CrTb6} and {CrHo6} molecules at low temperatures. Ab initio calculations predict toroidal magnetic moments in the two Ln3 triangles, which are found to couple, stabilizing a con‐rotating ferrotoroidal ground state in Tb and Ho examples and extend the possibility of observing toroidal behaviour in non DyIII complexes for the first time. |
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| Keywords: | chromium clusters dipolar coupling lanthanides single-molecule magnets |
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