Insertion of single-ion magnets based on mononuclear Co(II) complexes into ferromagnetic oxalate-based networks

M Palacios-Corella; V García-López; C Sánchez-Sánchez; J M Clemente-Juan; M Clemente-León; E Coronado

doi:10.1039/d1dt00595b

Insertion of single-ion magnets based on mononuclear Co(II) complexes into ferromagnetic oxalate-based networks

Dalton Trans. 2021 May 4;50(17):5931-5942. doi: 10.1039/d1dt00595b.

Authors

M Palacios-Corella¹, V García-López¹, C Sánchez-Sánchez¹, J M Clemente-Juan¹, M Clemente-León¹, E Coronado¹

Affiliation

¹ Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, C/Catedrático José Beltrán 2, 46980 Paterna, Spain. miguel.clemente@uv.es.

PMID: 33949535
DOI: 10.1039/d1dt00595b

Abstract

The 1 : 2 and 1 : 1 Co(ii) complexes of the L ligand (L = 6-(3,5-diamino-2,4,6-triazinyl)2,2'-bipyridine) with formulas [CoII(L)2](ClO4)2·0.5MeCN·Et2O (1) and [CoII(L)(CH3CN)2(H2O)](ClO4)2·MeCN (2) have been prepared. The structural and magnetic characterization of the two compounds shows that they contain octahedral high-spin Co(ii) and present a field-induced slow relaxation of the magnetization. 1 has been inserted into a bimetallic oxalate-based network leading to a novel achiral 3D compound of formula [CoII(L)2][MnIICrIII(ox)3]2·(solvate) (3) exhibiting ferromagnetic ordering below 4.6 K. EPR measurements suggest a weak magnetic coupling between the two sublattices.