Abstract

Reaction of nikiel (II) chloride with tetraethylenepentamine (tetren) and tetrabutylammonium hexachlororhenate [Bu 4N] 2ReCl 6 produced a new kind of binuclear compounds: [Ni(tetren)]ReCl 6 ( 1) and [Ni(tetren)]ReCl 6·CH 3OH ( 2) in which [ReCl 6] 2− anions and [Ni(tetren)] 2+ cations are held united by electrostatic forces. The magnetic behaviour of 1 and 2 has been investigated over the temperature range 1.7–300 K. Compound 1 behaves as a ferrimagnetic Ni II Re IV bimetallic, one-dimensional (1D) chain with intrachain antiferromagnetic coupling. A hysteresis loop characteristic of a soft magnet has been obtained. Compound 2 shows weak antiferromagnetic interactions within Ni II–Re IV units.

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