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Ferromagnetic Properties of a Trinuclear Nickel(II) Complex with a Trithiocyanurate Bridge

Pavel Kopel ; Jerzy Mrozinski ; Karel Dolezal ; Vratislav Langer (Institutionen för kemi- och bioteknik, Oorganisk miljökemi) ; Roman Boca ; Alina Bienko ; Andrzej Pochaba
European Journal of Inorganic Chemistry (1434-1948). Vol. 2009 (2009), 36, p. 5475-5482.
[Artikel, refereegranskad vetenskaplig]

A novel trinuclear nickel(II) complex with N,N,N',N'',N''-pentamethyldiethylenetriamine (pmdien) and a trithiocyanurate(3-) (ttc3-) bridge of composition [Ni3(pmdien)3(μ-ttc)](ClO4)3 (1) was prepared. The X-ray crystal structure of 1 was determined, revealing the tris-N,S chelating mode of the trithiocyanurate bridge, forming a regular triangular NiII3 core. A deformed trigonal bipyramidal arrangement of the central atoms was further achieved by coordination of three pmdien N atoms. The complex shows a ferromagnetic exchange interaction among the NiII magnetic centers that is tuned by single-ion anisotropy and/or antisymmetric exchange. The complex orders ferromagnetically at Tc = 10 K and exhibits spin-glass properties.

Nyckelord: Nickel, magnetic properties, bridging ligands, multinuclear complexes



Denna post skapades 2009-12-14.
CPL Pubid: 103518

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Oorganisk miljökemi (2005-2014)

Ämnesområden

Magnetism
Koordinationskemi
Fasta tillståndets kemi

Chalmers infrastruktur