A linear tetranuclear single-molelcule magnet of Mn(II)(2)Mn(III)(2) with the anion of 2-(Hydroxymethyl)pyridine

Inorg Chem. 2010 Apr 19;49(8):3688-90. doi: 10.1021/ic100224j.

Abstract

A tetranuclear manganese complex, [Mn(4)(hmp)(6)(N(CN)(2))(4)(H(2)O)(2)] [1; Hhmp = 2-(hydroxymethyl)pyridine; N(CN)(2)(-) = dicyanamide anion], was synthesized and characterized by single-crystal X-ray diffraction, bond valence sum calculations, IR spectra, elemental analysis, and magnetic measurements. The structure of 1 consists of a linear [Mn(II)(2)Mn(III)(2)] core formed by six hmp(-) groups linking Mn(II/III) ions. Magnetic studies show that 1 behaves as a single-molecule magnet with ferromagnetic coupling between the metal centers.