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Issue 4, 2011
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Strategies to enhance signal intensity with paramagnetic fluorine-labelled lanthanide complexes as probes for 19F magnetic resonance

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Abstract

The synthesis and 19F NMR spectroscopic properties are reported for three series of CF3-labelled lanthanide(III) complexes, based on mono- and diamide cyclen ligands. Analyses of variable temperature, pH and field 19F, 17O and 1H NMR spectroscopic experiments are reported and the merits of a triphosphinate mono-amide complex defined by virtue of its favourable isomer distribution and attractive relaxation properties. These lead to an enhanced sensitivity of detection in 19F magnetic resonance experiments versus a diamagnetic Y(III) analogue, paving the way for future shift and imaging studies.

Graphical abstract: Strategies to enhance signal intensity with paramagnetic fluorine-labelled lanthanide complexes as probes for 19F magnetic resonance

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Publication details

The article was received on 14 Sep 2010, accepted on 08 Nov 2010 and first published on 03 Dec 2010


Article type: Paper
DOI: 10.1039/C0DT01232G
Citation: Dalton Trans., 2011,40, 904-913

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    Strategies to enhance signal intensity with paramagnetic fluorine-labelled lanthanide complexes as probes for 19F magnetic resonance

    K. H. Chalmers, M. Botta and D. Parker, Dalton Trans., 2011, 40, 904
    DOI: 10.1039/C0DT01232G

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