McConnell I mechanism promotes ferromagnetic interactions between p-stacked Ni(II)-thiazyl complexes

Elisabeth M. Fatila (1) , Rodolphe Cérac (2) , 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 coordination complex of Ni(hfac)2 (hfac = 1,1,1,5,5,5-hexafluoroacetylacetonato) and the 4-(benzoxazol-20-yl)-1,2,3,5-dithiadiazolyl (boaDTDA) neutral radical p-stacks in a one-dimensional ''staircase'' arrangement. This particular packing aligns regions of a and b spin densities on neighbouring NiII(hfac)2(boaDTDA) molecules. This complex exemplifies a McConnell I type mechanism, giving rise to intermolecular ferromagnetic exchange observed for the first time between metal-thiazyl complexes.

Mots clés: Intermolecular ferromagnetic exchange; Metal-thiazyl complexes

Domaines: Matériaux

Elisabeth M. Fatila, Rodolphe Cérac, Michael Jennings, Kathryn E. Preuss. McConnell I mechanism promotes ferromagnetic interactions between p-stacked Ni(II)-thiazyl complexes. Chemical Communications, 2013, 49, pp. 9431-9433. ⟨10.1039/c3cc45605f⟩. ⟨hal-00990307⟩