A Fe17 cluster with S = 35/2 ground state: Synthesis, structure, and magnetic properties

A new polyiron complex [Fe17(OH)7O11(O2CPh)20(N3)2]·4H2O·10MeCN (1), with compact [Fe17(OH)7O11] core encapsulated by twenty benzoate anions and two end-on (EO) azido ligands has been synthesized and structurally characterized. Intramolecular antiferromagnetic couplings are observed for 1 and it has S = 35/2 ground state which was confirmed by magnetic measurements and Mössbauer spectra.

A novel polyiron cluster [Fe17(OH)7O11(O2CPh)20(N3)2]·4H2O·10MeCN (1) has been synthesized and structurally characterized. Magnetic measurements and Mössbauer spectra studies indicate that cluster 1 has S = 35/2 ground state.Figure optionsDownload as PowerPoint slideResearch highlights
► Fe17 cluster contains both oxo and end-on azido bridges.
► Seventeen iron(III) ions are encapsulated by twenty benzoate and two azido ligands.
► Fe17 cluster has large ground spin state of S = 35/2.