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论文类型：期刊论文

发表时间：2020-01-21

发表刊物：INORGANIC CHEMISTRY FRONTIERS

收录刊物：EI、SCIE

卷号：7

期号：2

页面范围：447-454

ISSN号：2052-1553

摘要：Investigating the magnetic anisotropy and magnetic interactions of lanthanide complexes is of vital importance for an in-depth understanding of their magnetic properties. Herein, we reported the synthetic, structural and magnetic studies of a triangular type dysprosium complex (1Dy(3), [{(Cp)(Tp*)Ln(mu-bta)}(3)center dot 2(thf)], Cp = C5H5, Tp* = hydrotris(3,5-dimethyl-1-pyrazolyl)borate anion, btaH = 1H-1,2,3-benzotriazole). 2Dy ([(Cp)Dy(Tp)(2)center dot C7H8], Tp = hydrotris(1-pyrazolyl)borate) was investigated by single-crystal angular-resolved susceptibility measurements and computational studies to help understand the magnetic anisotropy of 1Dy(3). The easy axis of three Dy-III ions in 1Dy(3) was orientated out of the triangular dysprosium plane. The exchange interactions were small (-0.85 cm(-1)) but caused remarkable effects on magnetic relaxations at low temperature. In the temperature range from 2 K to 4 K, magnetic relaxation occurred via the exchange-coupled low-lying excited states, inhibiting magnetic hysteresis. Our study showed that weak intramolecular magnetic interactions can significantly affect the dynamic properties in the low temperature regime.