Field-Induced Multiple Relaxation Mechanism of CoIII2DyIII Compound with the Dysprosium Ion in a Low-Symmetrical Environment

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• 作者：Shufang Xue ; Liviu Ungur ; Yun-Nan Guo ; Jinkui Tang ; Liviu F. Chibotaru
• 刊名：Inorganic Chemistry
• 出版年：2014
• 出版时间：December 1, 2014
• 年：2014
• 卷：53
• 期：23
• 页码：12658-12663
• 全文大小：452K
• ISSN：1520-510X

文摘

A defective cubane-shaped heterometallic trinuclear Co^III₂Dy^III compound with only one magnetically interesting ion (Dy^III) has been assembled by virtue of a multifunctional acylhydrazone ligand. Because of the nonaxial ground state of Dy^III ion derived from a low-symmetrical crystal field, the title compound displays field-induced multiple relaxation processes which are of molecular and a dipolar鈥揹ipolar coupling origin, as revealed by combined experimental and theoretical investigations. The results demonstrate that such a mononuclear dysprosium(III) compound with a low-symmetrical environment of magnetic center appears to be a model system for further investigations to shed light on the complex relaxation mechanism of lanthanide-based single ion magnets.