Abstract

Abstract The magnetic susceptibility of magnesium 2,2′-dipyridylide has been determined in its THF (tetrahydrofuran) adducts in a temperature range of 1.6–20 K. The susceptibility of Mg(dipy)2.THF exhibits two maxima at about 3.9 and 9.5 K due to short range and long-range interactions, respectively. The observed susceptibility conforms to the alternating linear Heisenberg model above about 6 K. Mg(dipy)2·3THF shows no definite maximum of magnetic susceptibility. The magnetic behavior of these complexes different from that of Be(dipy)2 is attributable to the difference in the ionic character between Mg–N and Be–N bonds.

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