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Title: Heterobimetallic gadolinium(III)-iron(III) complex of DTPA-bis(3-hydroxytyramide)
Authors: Parac-Vogt, Tatjana ×
Kimpe, Kristof
Binnemans, Koen #
Issue Date: 2004
Publisher: Elsevier science sa
Series Title: Journal of alloys and compounds vol:374 issue:1-2 pages:325-329
Abstract: A derivative of diethylenetriamine-N,N,N',N",N"-pentaacetic acid (DTPA), carrying two catechol functional groups has been synthesised by the reaction between DTPA-bis(anhydride) and 3-hydroxytyramine (dopamine). The ligand DTPA-bis(3-hydroxytyramide), [DTPA(HTA)(2)], is able to form stable heterobimetallic complexes with gadolinium(III) and iron(III) ions. The gadolinium(III) occupies the internal coordination cage of DTPA formed by three nitrogens, two carboxylate and two amide oxygens, while the [Fe(NTA)(H2O)(2)] (nitrilotri acetic acid, NTA) binds to catechol units by the substitution of two water ligands. The formation of polymeric species was avoided by using the tripodal NTA ligand. The heterobimetallic complex was characterised by means of visible absorption spectroscopy, electron spray ionisation-mass spectrometry (ESI-MS), and nuclear magnetic resonance (NMR) spectroscopy.
URI: 
ISSN: 0925-8388
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Design and Synthesis
× corresponding author
# (joint) last author

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