Fluoride Binding and Crystal-Field Analysis of Lanthanide Complexes of Tetrapicolyl-Appended Cyclen

被引：29

作者：

Blackburn, Octavia A. ^{[1
]}

Kenwright, Alan M. ^{[2
]}

Jupp, Andrew R. ^{[1
]}

Goicoechea, Jose M. ^{[1
]}

Beer, Paul D. ^{[1
]}

Faulkner, Stephen ^{[1
]}

机构：

[1] Univ Oxford, Chem Res Lab, 12 Mansfield Rd, Oxford OX1 3TA, England

[2] Univ Durham, Dept Chem, South Rd, Durham DH1 3LE, England

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2016年 / 22卷 / 26期

基金：

欧洲研究理事会;

关键词：

crystal field; fluorides; lanthanides; magnetic anisotropy; NMR spectroscopy; TEMPERATURE MAGNETIC-ANISOTROPY; SINGLE-MOLECULE MAGNETS; PARAMAGNETIC NMR; CHEMICAL-SHIFTS; SOLID-STATE; RELAXATION; DEPENDENCE; REAGENTS; MODEL; DOTA;

D O I：

10.1002/chem.201601170

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Lanthanide complexes of tetrapicolyl cyclen displayed remarkably high affinities for fluoride (log K approximate to 5) in water, and were shown to form 1: 1 complexes. The behaviour of these systems can be rationalised by changes to the magnitude of the crystal-field parameter, B-0(2). However, such changes are not invariably accompanied by a change in sign of this parameter: for early lanthanides, the N8 donor set with a coordinated axial water molecule ensures that the magnetic anisotropy has the opposite sense to that observed in the analogous dehydrated lanthanide complexes.

引用

页码：8929 / 8936

页数：8

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