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Get Free AccessA prerequisite to understand and subsequently to allow applications of the magnetic properties of polymetallic exchange coupled systems is a detailed insight into the magnetic properties of their elementary building blocks and the interaction between them. Such an understanding passes through the quantification of the relative contributions of single-ion and exchange terms to the overall magnetic properties of the system. In the general case, the quantification of these two kinds of contributions is possible when numerous spin-states are experimentally observed since single-ion and exchange terms project differently on the ground and various excited spin-states of an exchange coupled system. We present here highly resolved multifrequency (X-, K-, and Q-band) CW-EPR spectra obtained on a heterooctametallic ring [Me2NH2][Cr(III)7Cd(II)F8((CH3)3CCOO)16] (1). The spectra of 1 provide a rare example of a polymetallic system where detailed information on the spin-Hamiltonian parameters of excited spin-states is experimentally observed. Analysis of these spectra allowed the direct quantification of the contributions of single-ion and exchange anisotropy terms to the magnetic properties of the system.
Stergios Piligkos, Eckhard Bill, David Collison, Eric J. L. McInnes, Grigore A. Timco, Høgni Weihe, Richard E. P. Winpenny, Frank Neese (2007). Importance of the Anisotropic Exchange Interaction for the Magnetic Anisotropy of Polymetallic Systems. Journal of the American Chemical Society, 129(4), pp. 760-761, DOI: 10.1021/ja068017q.
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Type
Article
Year
2007
Authors
8
Datasets
0
Total Files
0
Language
English
Journal
Journal of the American Chemical Society
DOI
10.1021/ja068017q
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