Synthesis and magnetic properties of heptadecametallic Fe(III) clusters

Ian A. Gass, Constantinos J. Milios, Marco Evangelisti, Sarah L. Heath, David Collison, Simon Parsons, Euan K. Brechin

Research output: Contribution to journalArticlepeer-review


Heptadecametallic, all-ferric pieces of molecular magnetite of general formula HL x[Fe17O16(OH)12(L)12Br4]Br3+x (L = b-picoline, isoquinoline, 3,5-lutidine; x = 0, 1) are made by the simple dissolution of FeBr3 in L. The b-picoline (or equivalent) molecules act simultaneously as solvent, base and capping ligand. The resultant structure consists of a metal–oxygen core containing both octahedral and tetrahedral Fe(III) ions that is the exact analogue of the metal–oxygen positions seen in the magnetite lattice. Antiferromagnetic exchange between the tetrahedral and octahedral Fe(III) ions lead to the stabilization of an S = 35/2 spin ground state.
Original languageEnglish
Pages (from-to)1835-1837
Number of pages3
Issue number9-11
Publication statusPublished - 29 Nov 2006


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