New lanthanide hybrid as clustered infinite nanotunnel with 3D Ln-O-Ln framework and (3,4)-connected net.
New lanthanide hybrid as clustered infinite nanotunnel with 3D Ln-O-Ln framework and (3,4)-connected net.
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DOI：
10.1021/ic0615271
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发表时间：
2007-01
影响因子：
4.6
通讯作者：
You-Gui Huang;Benlai Wu;D. Yuan;Yan-qing Xu;F. Jiang;M. Hong
中科院分区：
文献类型：
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作者：
You-Gui Huang;Benlai Wu;D. Yuan;Yan-qing Xu;F. Jiang;M. Hong
一系列新的镧系杂化物[Ln_3（μ-OH）_4（2，5-pydc）（2，5-HPydc）3（H2O）4]n Ln = Gd（1），Dy（2），Er（3），Eu（4），Sm（5），Yb（6），Y（7）; 2，5-pydc=吡啶-2，5-二羧酸酯），作为具有螺旋十二面体链和完全3D Ln-O-Ln连接性的成簇镧系氧化物环隧道，已水热合成和表征。杂化体的无机骨架可以用Schläfli符号（6210）2（64102）表示为一个单一的3D（3，4）-连通网络。研究了配合物的发光性质，结果表明：Dy（III）（2）和Eu（III）（4）配合物在可见光区具有敏化发光。变温磁化率测量结果表明，配合物1-3几乎是顺磁性的，而配合物4-6的斯塔克能级的减少导致样品从300 K冷却到2 K时mu（eff）的连续下降。
A series of new lanthanide hybrids [Ln3(mu-OH)4 (2,5-pydc)(2,5-Hpydc)3(H2O)4]n (Ln = Gd (1), Dy (2), Er (3), Eu (4), Sm (5), Yb (6), Y (7); 2,5-pydc=pyridine-2,5-dicarboxylate), as clustered lanthanide oxide ring tunnels with helical dodecahedral chains and fully 3D Ln-O-Ln connectivity, has been hydrothermally synthesized and characterized. The inorganic skeleton of the hybrid can be specified by the Schläfli symbol (6210)2 (64102) as a single 3D (3,4)-connected net. The luminescence properties have been studied, and the results showed that the Dy(III) (2) and Eu(III) (4) complexes exhibited sensitized luminescence in the visible region. Variable-temperature magnetic susceptibility measurements of 1-6 showed that the complexes 1-3 are nearly paramagnets, whereas the depopulation of the Stark levels in complexes 4-6 leads to a continuous decrease in mu(eff) when the sample is cooled from 300 to 2 K.