Synthesis and SMM behaviour of trinuclear versus dinuclear 3d-5f uranyl(v)-cobalt(ii) cation-cation complexes

Lucile Chatelain; Floriana Tuna; Jacques Pécaut; Marinella Mazzanti

doi:10.1039/c6dt04558h

Synthesis and SMM behaviour of trinuclear versus dinuclear 3d-5f uranyl(v)-cobalt(ii) cation-cation complexes

Dalton Trans. 2017 May 2;46(17):5498-5502. doi: 10.1039/c6dt04558h.

Authors

Lucile Chatelain¹, Floriana Tuna, Jacques Pécaut, Marinella Mazzanti

Affiliation

¹ Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland. marinella.mazzanti@epfl.ch.

PMID: 28094378
DOI: 10.1039/c6dt04558h

Abstract

Trinuclear versus dinuclear heterodimetallic U^VO₂⁺Co²⁺ complexes were selectively assembled via a cation-cation interaction by tuning the ligand. The trimeric complex 2, with a linear [Co-O[double bond, length as m-dash]U[double bond, length as m-dash]O-Co] core, exhibits magnetic exchange and slow relaxation with a reversal barrier of 30.5 ± 0.9 K providing the first example of a U-Co exchange-coupled SMM.