Alternating Ferro- and Antiferromagnetic Interactions in a MnII Chain with Alternating End-On and End-to-End Bridging Azido Ligands


  • This work has been supported by the Spanish Directión General de Investigatión Cientifica y Tecnica (DGICYT) (Project PB90–0549) and the University of the Basque Country (UPV 130.310-EB017/92).


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Mn(ClO4)2 ·6H2O, 2,2'-bipyridine, and NaN3 were used to synthesize [Mn(N3)2-(bpy)]χ, the crystal structure of which (shown below) is characterized by alternating end-on and end-to-end bridging azido ligands. The existence of alternating ferro-and antiferromagnetic interactions between the S = 5/2 ions, as found previously only in copper(II) complexes, is suggested.