Influence of ancillary ligands and solvents on the nuclearity of Ni-Ln complexes

Dalton Transactions : an International Journal of Inorganic Chemistry
Jean-Pierre CostesWolfgang Wernsdorfer

Abstract

A Schiff base ligand resulting from the reaction of ovanillin and 2,2-dimethyl-1,3-diaminopropane allows the preparation of hetero-dinuclear [Ni-Ln]3+ or -trinuclear [Ni-Ln-Ni]3+ complexes. Although empirical parameters for rationalizing the strength of the ferromagnetic Ni-Gd interaction have already been discussed in several papers, no systematic study has been devoted to the control of the nuclearity of such complexes. With the help of structural determinations, we demonstrate the role of solvent and of the nature of ancillary ligands, linked to the Ln ions, in nuclearity. For instance, the presence of one chelating nitrato ligand is already sufficient to impede an increase in the nuclearity, while the replacement of nitrato ligands by chloride anions still yields dinuclear Ni-Ln complexes. This experimental result evidences the role of protic solvents. In contrast, the use of lanthanide salts, soluble in non-protic solvents, allows the isolation of dinuclear [Ni-Ln]3+ or trinuclear cationic [LNi-Ln-NiL]3+ complexes, depending on the Ni/Ln ratio. A further synthetic step can be overtaken by the reaction of a Ni-Ln complex, soluble in a non-protic solvent, with a LM complex (M = Cu, Zn). By doing so, a heterotrinuclear comple...Continue Reading

References

Jan 5, 2006·Inorganic Chemistry·Jean-Pierre CostesWolfgang Wernsdorfer
Nov 15, 2007·Chemistry : a European Journal·Jean-Noël RebillyTalal Mallah
Apr 14, 2009·Inorganic Chemistry·Marius AndruhSong Gao
Apr 16, 2011·Dalton Transactions : an International Journal of Inorganic Chemistry·Anastasia N GeorgopoulouAthanassios K Boudalis
Aug 16, 2011·Dalton Transactions : an International Journal of Inorganic Chemistry·Saurabh Kumar SinghGopalan Rajaraman
Oct 26, 2011·Inorganic Chemistry·Kartik Chandra MondalAnnie K Powell
Dec 22, 2011·Dalton Transactions : an International Journal of Inorganic Chemistry·Zhao-Sha MengMing-Liang Tong
Feb 9, 2012·Journal of the American Chemical Society·Jun-Bo PengZhiping Zheng
May 30, 2012·Journal of the American Chemical Society·Eduard CremadesEliseo Ruiz
Oct 9, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Apoorva UpadhyayMaheswaran Shanmugam
Dec 24, 2013·Inorganic Chemistry·Silvia Gómez-CocaEliseo Ruiz
Apr 25, 2014·Inorganic Chemistry·Renaud RuampsNathalie Guihéry
May 9, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·Traian D PasatoiuMarius Andruh
Apr 29, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Ivan NemecZdeněk Trávníček
Nov 10, 2009·Journal of Chemical Theory and Computation·Rémi MauriceNathalie Guihéry

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Citations

Jan 27, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Yuji TakiguchiTakashiro Akitsu

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