The impact of the lanthanide contraction on the structure of complexes of a calix[4]arene trisamide

被引：0
|
作者：
G. L. Nealon
M. Mocerino
M. I. Ogden
B. W. Skelton
机构：
[1] Curtin University of Technology,Nanochemistry Research Institute, Department of Chemistry
[2] University of Western Australia,Chemistry M313, School of Biomedical, Biomolecular and Chemical Sciences
来源：
Journal of Inclusion Phenomena and Macrocyclic Chemistry | 2009年 / 65卷
关键词：
Calixarene; Lanthanide; Picrate; Second-sphere coordination;
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暂无
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学科分类号：
摘要：
The syntheses of samarium, holmium, and ytterbium complexes of a tris-amide calix[4]arene are described, and the resulting structures are compared with the previously reported gadolinium complex. The syntheses involved the reaction of 5,11,17,23-tetra-tert-butyl-24-hydroxy-26,27,28-tris(diethylcarbamoylmethoxy)calix[4]arene with the appropriate lanthanide picrate hydrate. Structural studies demonstrated that a picrate anion acts as a quasi-bidentate ligand with Sm (and Gd), is unidentate in the Ho complex, but is found in the second coordination sphere for the smallest lanthanide cation (Yb) investigated.
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页码：25 / 30
页数：5
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