期刊
AUSTRALIAN JOURNAL OF CHEMISTRY
卷 67, 期 11, 页码 1542-1552出版社
CSIRO PUBLISHING
DOI: 10.1071/CH14166
关键词
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Polyoxometalates are robust and versatile multidentate oxygen-donor ligands, eminently suitable for coordination to trivalent lanthanoid ions. To date, 10 very different structural families of such complexes have been found to exhibit slow magnetic relaxation due to single-molecule magnet (SMM) behaviour associated with the lanthanoid ions. These families encompass complexes with between one and four of the later lanthanoid ions: Tb, Dy, Ho, Er, and Yb. The lanthanoid coordination numbers vary between six and eleven and a range of coordination geometries are evident. The highest energy barrier to magnetisation reversal measured to date for a lanthanoid-polyoxometalate SMM is U-eff/k(B)=73K for the heterodinuclear Dy-Eu compound (Bu4N)(8)H-4[DyEu(OH)(2)(-SiW10O36)(2)].
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