Abstract

A tetranuclear copper(II) cluster, namely [Cu4OCl6(mor)4], mor—morpholine, has been investigated by the magnetization measurements at the temperature as low as 1.74 and 2.73 K, respectively. A numerical derivative yielded the differential magnetic susceptibility. The low-temperature magnetization data were fitted to a two dimensional function M= f(B,T) and the following set of magnetic parameters has been obtained: g = 2.351, Ja/k = − 6.33 K and Jb/k = − 0.76 K. These parameters determine the spacing of energy levels in a tetranuclear cluster of the C3v symmetry.

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