Direct NMR spectroscopic observation of a lanthanide-coordinated water molecule whose exchange rate is dependent on the conformation of the complexes

Silvio Aime; Alessandro Barge; Mauro Botta; Alvaro S. De Sousa; David Parker

doi:10.1002/(sici)1521-3773(19981016)37:19<2673::aid-anie2673>3.0.co;2-%23

Direct NMR spectroscopic observation of a lanthanide-coordinated water molecule whose exchange rate is dependent on the conformation of the complexes

Silvio Aime
, Alessandro Barge
, Mauro Botta
, Alvaro S. De Sousa
, David Parker

Research output: Contribution to journal › Article › peer-review

Abstract

A large difference in the exchange rate of the coordinated water molecule is seen in solution for the diastereoisomers M and m of a europium(III) complex with an octadentate, neutral macrocyclic ligand (k(ex)(M) < k(ex)(m)). This finding is of high relevance to the design of more efficient contrast agents for magnetic resonance imaging.

Original language	English
Pages (from-to)	2673-2675
Number of pages	3
Journal	Angewandte Chemie - International Edition
Volume	37
Issue number	19
DOIs	https://doi.org/10.1002/(sici)1521-3773(19981016)37:19<2673::aid-anie2673>3.0.co;2-%23
Publication status	Published - 16 Oct 1998
Externally published	Yes

Keywords

Lanthanides
Macrocyclic ligands
NMR spectroscopy
Water exchange

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10.1002/(sici)1521-3773(19981016)37:19<2673::aid-anie2673>3.0.co;2-%23

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title = "Direct NMR spectroscopic observation of a lanthanide-coordinated water molecule whose exchange rate is dependent on the conformation of the complexes",

abstract = "A large difference in the exchange rate of the coordinated water molecule is seen in solution for the diastereoisomers M and m of a europium(III) complex with an octadentate, neutral macrocyclic ligand (k(ex)(M) < k(ex)(m)). This finding is of high relevance to the design of more efficient contrast agents for magnetic resonance imaging.",

keywords = "Lanthanides, Macrocyclic ligands, NMR spectroscopy, Water exchange",

author = "Silvio Aime and Alessandro Barge and Mauro Botta and \{De Sousa\}, \{Alvaro S.\} and David Parker",

year = "1998",

month = oct,

day = "16",

doi = "10.1002/(sici)1521-3773(19981016)37:19<2673::aid-anie2673>3.0.co;2-\%23",

language = "English",

volume = "37",

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journal = "Angewandte Chemie - International Edition",

issn = "1433-7851",

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}

Aime, S, Barge, A, Botta, M, De Sousa, AS & Parker, D 1998, 'Direct NMR spectroscopic observation of a lanthanide-coordinated water molecule whose exchange rate is dependent on the conformation of the complexes', Angewandte Chemie - International Edition, vol. 37, no. 19, pp. 2673-2675. https://doi.org/10.1002/(sici)1521-3773(19981016)37:19<2673::aid-anie2673>3.0.co;2-%23

TY - JOUR

T1 - Direct NMR spectroscopic observation of a lanthanide-coordinated water molecule whose exchange rate is dependent on the conformation of the complexes

AU - Aime, Silvio

AU - Barge, Alessandro

AU - Botta, Mauro

AU - De Sousa, Alvaro S.

AU - Parker, David

PY - 1998/10/16

Y1 - 1998/10/16

N2 - A large difference in the exchange rate of the coordinated water molecule is seen in solution for the diastereoisomers M and m of a europium(III) complex with an octadentate, neutral macrocyclic ligand (k(ex)(M) < k(ex)(m)). This finding is of high relevance to the design of more efficient contrast agents for magnetic resonance imaging.

AB - A large difference in the exchange rate of the coordinated water molecule is seen in solution for the diastereoisomers M and m of a europium(III) complex with an octadentate, neutral macrocyclic ligand (k(ex)(M) < k(ex)(m)). This finding is of high relevance to the design of more efficient contrast agents for magnetic resonance imaging.

KW - Lanthanides

KW - Macrocyclic ligands

KW - NMR spectroscopy

KW - Water exchange

UR - https://www.scopus.com/pages/publications/0032538573

U2 - 10.1002/(sici)1521-3773(19981016)37:19<2673::aid-anie2673>3.0.co;2-%23

DO - 10.1002/(sici)1521-3773(19981016)37:19<2673::aid-anie2673>3.0.co;2-%23

M3 - Article

SN - 1433-7851

VL - 37

SP - 2673

EP - 2675

JO - Angewandte Chemie - International Edition

JF - Angewandte Chemie - International Edition

IS - 19

ER -

Direct NMR spectroscopic observation of a lanthanide-coordinated water molecule whose exchange rate is dependent on the conformation of the complexes

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