We describe synthesis of a new tetratopic phenoxyl radical ligand based on the previously reported ditopic “baqp” radical. The tetra topic ligand is prepared in five steps from 4-ferf-butvIphenoI. Coordination of the ligand with Cu(OAc)2 produced a tetranuclear complex with an S = i ground state featuring a coordinated hexa-anion radical with very strong intramolecular antiferromagnetic exchange coupling.
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Acknowledgments: NSERC, CFI, and Brock University are thanked for funding and Art van der Est (Brock University) for the use of his EPR facility.
© 2016 by the authors; licensee MDPI, Basel, Switzerland.
- Magnetic exchange coupling
- Polytopic ligands
- Redox-active ligands