基于四甲基取代六元瓜环的四核稀土镝簇合物的慢磁弛豫（英文）
Slow Magnetic Relaxation in Sandwich-Type Tetranuclear Dysprosium Complex with TMe Q[6](TMe Q[6]=α, α, δ, δ-Tetramethylcucurbit[6]uril)
Date
2015-9-10Collections
- 化学化工－已发表论文 [14241]
Abstract
报道了2个基于四甲基取代六元瓜环的三明治型四核稀土簇合物,[ln4(μ3-OH)4(μ2-OH)2(H2O)4(nO3)2(TME Q[6])2]·(nO3)4·26H2O(ln=dy,1;ln=Tb,2)。晶体结构分析显示2个簇合物包含2个四甲基取代瓜环夹心的四核稀土立方烷结构,[ln4(μ3-OH)4]8+。磁性研究显示化合物1显示了慢磁弛豫行为。由于六元瓜环配体可以有效的传递能量给稀土铽离子,化合物2具有较好的发光性能。 Two TMe Q[6]-supported sandwich tetranuclear complexes, [Ln4(μ3-OH)4(μ2-OH)2(H2O)4(NO3)2(TMe Q[6])2](NO3)4·26H2O(Ln=Dy, 1; Ln=Tb, 2), have been prepared and characterized.Crystal structural analysis reveals that both complexes contain a cubane-like [Ln4(μ3-OH)4]8+cluster core sandwiched between two TMe Q[6] macrocycles.Magnetic investigations indicate that complex 1 displays slow magnetization relaxation.Complex 2exhibits intense photoluminescence owing to the efficient energy transfer from TMe Q[6] ligand to Tb3+ion.