Journal article

Tetranuclear and Octanuclear Cobalt(II) Citrate Cluster Single Molecule Magnets

Boujemaa Moubaraki, Keith S Murray, Timothy A Hudson, Richard Robson

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | WILEY-V C H VERLAG GMBH | Published : 2008

Abstract

In a follow-up study of the cobalt(II) member 1 of a family of isostructural cubane clusters of type [C(NH2)3] 8[MII4(cit)4]· 8H 2O (cit = citrate, M = Mg, Mn, Fe, Co, Ni, Zn) by measuring AC magnetic susceptibilities, as a function of frequency, this compound clearly displays behaviour typical of magnetization reversal and slow magnetic relaxation (ΔE = 13.1 K, τo = 8.4 × 10-7 s). A related octanuclear cluster [Co8(C4O 7)4-(H2O)12]·24H 2O (2) that contains a [Co4(C4O 7)4] cubane moiety, behaves likewise (ΔE = 20.5 K, τo = 1.0 × 10-7 s). © Wiley-VCH Verlag GmbH & Co. KGaA, 2008.

University of Melbourne Researchers

Grants

Funding Acknowledgements

The authors acknowledge financial support for this work from ARC Discovery grants (to KSM and RR). Kevin Berry is thanked very much for making new calculations.