Single chain magnets based on the oxalate ligand |
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Authors: | Coronado Eugenio Galán-Mascarós José R Martí-Gastaldo Carlos |
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Institution: | Universidad de Valencia, Instituto de Ciencia Molecular, Polígono de la Coma s/n, 46980 Paterna, Spain. eugenio.coronado@uv.es |
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Abstract: | The anionic oxalate-bridged bimetallic chain Co(H2O)2Cr(ox)3]- shows slow relaxation of the magnetization, typical of the so-called single-chain magnets, when crystallized in segregated layers in a mixed salt with the supramolecular cations C12H24O6K]+ and (C12H24O6)(FC6H4NH3)]+. This is the first time that such phenomenon has been observed in an oxalate-bridge material. In view of the wide synthetic versatility exhibited by the oxalate ligand, it opens the door for the realization of a complete family of SCM materials whose physical properties might be tuned by the suitable replacement of M3+ ions within the chain. The information extracted from the systematic study of these compounds should provide important information concerning the main parameters that affect the slow-relaxation phenomena in this sort of 1D nanomagnets. |
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