Ferromagnetism in a dinuclear nickel(II) complex containing triethylenetetramine and tricyanomethanide

Roman Boca; Milan Gembický; Radovan Herchel; Wolfgang Haase; Lothar Jäger; Christoph Wagner; Helmut Ehrenberg; Hartmut Fuess

doi:10.1021/ic034725q

Ferromagnetism in a dinuclear nickel(II) complex containing triethylenetetramine and tricyanomethanide

Inorg Chem. 2003 Nov 3;42(22):6965-7. doi: 10.1021/ic034725q.

Authors

Roman Boca¹, Milan Gembický, Radovan Herchel, Wolfgang Haase, Lothar Jäger, Christoph Wagner, Helmut Ehrenberg, Hartmut Fuess

Affiliation

¹ Department of Inorganic Chemistry, Slovak Technical University, SK-812 37 Bratislava, Slovakia.oca@cvtstu.stuba.sk

PMID: 14577756
DOI: 10.1021/ic034725q

Abstract

Triethylenetetramine (L(4)) was used as a tetradentate blocking ligand that, after complexation with Ni(II), leaves two sites ready for ligation with tricyanomethanide. The formed binuclear complex [L(4)Ni(NCC(CN)CN)(2)NiL(4)](ClO(4))(2) exhibits a ferromagnetic coupling with J/hc = +0.15 cm(-1) and g(Ni) = 2.126; below 16 K, a ferromagnetic ordering is evidenced by ac magnetic susceptibility (both in-phase and out-of-phase), magnetization, field-cooled magnetization, and zero-field-cooled magnetization measurements.