Unusual magnetic behavior of the new supramolecular ensemble [Ni2L4]2·[NiCl2(LH)2(MeCN)2]·4MeCN (LH is 2-mercaptobenzimidazole)

Author： Nikiforova M.   Talismanova M.   Aleksandrov G.   Kotovskaya S.   Sidorov A.   Novotortsev V.   Ikorskii V.   Charushin V.   Eremenko I.   Moiseev I.  

Publisher： Springer Publishing Company

ISSN： 1066-5285

Source： Russian Chemical Bulletin, Vol.55, Iss.12, 2006-12, pp. : 2181-2186

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Abstract

The diamagnetic dinuclear complex Ni2L4 was synthesized by the reaction of NiCl2·6H2O with 2-mercaptobenzimidazole (LH) in ethanol in the presence of Et3N. The solid-state reaction (reagent ratio Ni: LH = 1: 2) followed by recrystallization of the reaction product from a MeCN-THF mixture afforded crystals of the associate [Ni2L4]2·[NiCl2(LH)2(MeCN)2] containing four acetonitrile solvate molecules. Crystals of 2·4MeCN exhibit ferromagnetic properties at helium temperatures.

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