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Ferromagnetic exchange interactions in two new binuclear nickel(II) complexes: [Ni(pymep)(X)2]2·nH2O{X = N3, NCS;n= 2,0; pymep = N-(6-methyl-2-pyridylmethylene)-2-(2-pyridyl) ethylamine}

Authors
Journal
Polyhedron
0277-5387
Publisher
Elsevier
Publication Date
Volume
10
Identifiers
DOI: 10.1016/s0277-5387(00)86173-2
Disciplines
  • Physics

Abstract

Abstract The [Ni(pymep)(N 3) 2] 2·2H 2O and [Ni(pymep)(NCS) 2] 2 compounds [pymep = N-(6-methyl-2-pyridylmethylene)-2-(2-pyridyl) ethylamine] have been synthesized and magnetic susceptibility measurements (3-200 K) show the existence of ferromagnetic exchange interactions in the two complexes, with the following exchange parameters: J = +21.4, D = −7.6 cm −1 (N 3) and J = +4.8, D = −10.4, z′J′ = 0.3 cm −1 (NCS). Both spectroscopic and magnetic results suggest for the azide complex a dimeric structure with the nickel centres being linked through one-end azide bridges, while for the thiocyanate compound bridging involves an end-to-end thiocyanate mode.

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