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Updated: May 16, 2026

Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging

Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging

Published on: July 21, 2011

Trinuclear nickel-lanthanide compounds.

Asamanjoy Bhunia¹, Munendra Yadav, Yanhua Lan

¹Institut für Anorganische Chemie, Karlsruher Institut für Technologie, Engesserstr. 15, Geb. 30.45, 76131 Karlsruhe, Germany.

Dalton Transactions (Cambridge, England : 2003)

|December 4, 2012

Summary

This summary is machine-generated.

This study synthesizes novel trinuclear 3d-4f metal complexes using a Schiff base ligand. These complexes exhibit a unique V-shaped structure and weak antiferromagnetic interactions between metal centers.

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Area of Science:

Coordination Chemistry
Inorganic Chemistry
Materials Science

Background:

Schiff base ligands are versatile in coordinating metal ions.
Trinuclear 3d-4f metal complexes offer unique magnetic and structural properties.

Purpose of the Study:

To synthesize and characterize novel trinuclear 3d-4f metal complexes.
To investigate the structural, spectroscopic, and magnetic properties of these complexes.

Main Methods:

In situ synthesis of a Schiff base proligand (H(4)L) from 3-formylsalicylic acid and tris(2-aminoethyl)amine (tren).
Co-crystallization with nickel(II) nitrate and lanthanide(III) nitrates (Gd, Dy, Er, Lu).
Structural characterization using single-crystal X-ray diffraction, electrospray ionization mass spectrometry (ESI-MS), and hydrogen/deuterium exchange (HDX).
Magnetic susceptibility measurements.

Main Results:

Successful synthesis of {[Ln{Ni(H(2)L)(tren)}(2)](NO(3))(3)} complexes (Ln = Gd, Dy, Er, Lu).
Determination of a novel V-shaped structure in the solid state for the trinuclear complexes.
Mass spectrometry and HDX experiments confirmed the complex structures in solution.
Magnetic studies indicated weak antiferromagnetic interactions between adjacent metal centers.

Conclusions:

The study presents a new class of V-shaped trinuclear 3d-4f metal complexes.
The synthesized complexes demonstrate interesting structural and magnetic behaviors.
The findings contribute to the understanding of coordination chemistry involving lanthanides and transition metals.