Variable frequency EPR studies of a centered FeIII tetrahedron

Ashley C. Stowe*, Johan Van Tol, Naresh S. Dalal, David Collison, Leigh Jones, James Tabernor, Euan K. Brechin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


High frequency EPR investigations have been undertaken to gain insight into the spin environment of a novel pentanuclear FeIII cluster, [Fe 5O2(OMe)2(Bta)4(BtaH)/(MeOH) 5Cl5] (Fe5Bta). The elongated, centered ferric tetrahedron contains five FeIII ions with a S = 15/2 ground spin state. Variable temperature EPR suggests that the first paramagnetic excited spin state is low lying. Employing high frequencies and fields in the EPR experiments allows for resolution of g anisotropy of the FeIII centers. We therefore are able to determine the g value of the FeIII ion precisely.

Original languageEnglish
Pages (from-to)3853-3856
Number of pages4
JournalInternational Journal of Modern Physics B
Issue number27-29
Publication statusPublished - 30 Nov 2004


  • Fe5


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