Ferromagnetic superexchange in a 1D -[LaIII-radical]- coordination polymer

Elisabeth M. Fatila (1) , Rodolphe Clérac (2) , Mathieu Rouzères (2) , Dmitriy V. Soldatov (1) , Michael Jennings (3) , Kathryn E. Preuss (1)

1 Department of Chemistry, University of Guelph
2 CRPP - Centre de recherches Paul Pascal
3 FreeLance Crystallography

The first coordination polymer of a bridging radical 1,2,3,5-dithiadiazolyl ligand is reported. Upon coordination with the La(hfac)3 fragment, the paramagnetic 4-(benzoxazol-20-yl)-1,2,3,5-dithiadiazolyl (boaDTDA) ligand forms a one-dimensional (1D) alternating -[La(hfac)3- boaDTDA]n- polymer exhibiting ferromagnetic (FM) coupling between the radicals, mediated through the diamagnetic LaIII ion (hfac = 1,1,1,5,5,5-hexafluoroacetylacetonato).

Domaines: Matériaux

Elisabeth M. Fatila, Rodolphe Clérac, Mathieu Rouzères, Dmitriy V. Soldatov, Michael Jennings, et al.. Ferromagnetic superexchange in a 1D -[LaIII-radical]- coordination polymer. Chemical Communications, 2013, 49, pp. 6271-6273. ⟨10.1039/c3cc43267j⟩. ⟨hal-00842651⟩