Single-molecule magnet behavior

Tang, J., Hewitt, 1., Madhu, N.T., Chastanet, G, Wemsdorfer, W., Anson, C.E. et al. (2006) Dysprosium triangles showing single-molecule magnet behavior of thermally excited spin states. Angewandte Chemie Intematiorml Edition, 45, 1729—1733. 

Barash, E.H., Coan, PS., Lobkovsky, F.B., Streib, W.E., and Caulton, K.G (1993) Anhydrous yttrium acetylacetonate and the course of thermal dehydration of Y(acac)3 H20. Inorganic Chemistry, 32, 697-501. Gamer, M.T., Lan, Y, Roesky, P.W., Powell, A.K., and Clerac, R. (2008) Pentanuclear dysprosium hydroxy cluster showing single-molecule-magnet behavior. Inorganic Chemistry, 47, 6581-6583. 

Gonidec, M., Biagi, R., Corradini, V., Moro, F. Renzi, V. (2011). Surface Supramolec-ular Organization of a Terbium(III) Double-Decker Complex on Graphite and its Single Molecule Magnet Behavior J. Am. Chem. Soc, 133,6603-6612. 

AC susceptibility measurements are frequently used to identify thermodynamic phase transitions and to characterize spin-glass behavior and superparamagnets such as the single-molecule magnets discussed below. 

Figure 9.20 The structure of the [Cu-L-Tb(hfac)2]2 cluster and its relaxation behavior [106], (Reprinted with permission from S. Osa, et al, A tetranuclear 3d-4f single molecule magnet [Cu°LTb (hfac)2]2, Journal of the American Chemical Society, 126,420-421, 2004. 2004 American Chemical Society.)...

Other related complexes (where the acetate can be replaced by another carboxylate) and new complexes were synthesized and found to have similar behavior they are now called single-molecule magnets , SMMs [4-8]. 

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