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对布莱尼顺磁镧系配位络合物磁各向异性理论局限性的批判性分析。

Critical analysis of the limitations of Bleaney's theory of magnetic anisotropy in paramagnetic lanthanide coordination complexes.

作者信息

Funk Alexander M, Finney Katie-Louise N A, Harvey Peter, Kenwright Alan M, Neil Emily R, Rogers Nicola J, Kanthi Senanayake P, Parker David

机构信息

Department of Chemistry , Durham University , South Road , Durham , DH1 3LE , UK . Email:

出版信息

Chem Sci. 2015 Mar 1;6(3):1655-1662. doi: 10.1039/c4sc03429e. Epub 2014 Dec 17.

DOI:10.1039/c4sc03429e
PMID:29449916
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5812375/
Abstract

The origins of the breakdown of Bleaney's theory of magnetic anisotropy are described, based on an analysis of eleven different complexes of the second half of the 4f elements that form isostructural series. An examination of the chemical shift and relaxation rate behaviour of resonances located at least four bonds away from the paramagnetic centre was undertaken, and correlated to theoretical predictions. The key limitations relate to comparability of ligand field splitting with spin-orbit coupling, variation in the position of the principal magnetic axis between Ln complexes and the importance of multipolar terms in describing lanthanide ligand field interactions.

摘要

基于对形成同构系列的4f元素后半部分的11种不同配合物的分析，描述了布莱尼磁各向异性理论的崩溃根源。对距离顺磁中心至少四个键的共振的化学位移和弛豫速率行为进行了研究，并与理论预测相关联。关键限制涉及配体场分裂与自旋轨道耦合的可比性、镧系元素配合物之间主磁轴位置的变化以及多极项在描述镧系元素配体场相互作用中的重要性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f8c3/5812375/aa17129b3707/c4sc03429e-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f8c3/5812375/d15d47e09821/c4sc03429e-s1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f8c3/5812375/da0450054896/c4sc03429e-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f8c3/5812375/e5b545895d02/c4sc03429e-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f8c3/5812375/b4201aec526b/c4sc03429e-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f8c3/5812375/aa17129b3707/c4sc03429e-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f8c3/5812375/d15d47e09821/c4sc03429e-s1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f8c3/5812375/da0450054896/c4sc03429e-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f8c3/5812375/e5b545895d02/c4sc03429e-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f8c3/5812375/b4201aec526b/c4sc03429e-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f8c3/5812375/aa17129b3707/c4sc03429e-f4.jpg

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