Versatility of the azido bridging ligand in the first two examples of ferro–antiferromagnetic alternating nickel(II) chains

Abstract

A one-pot reaction of Ni(ClO₄)₂·6H₂O, N,N-dimethylethylenediamine (dmen) or 2-aminoethylpyridine (aep) and NaN₃ affords the two [Ni(dmen)(µ-Na₃)₂]_n1 and [Ni(aep)(µ-N₃)₂]_n2 chains with unprecedented alternating end-on and end-to-end bridging loops perpendicular to one another; magnetic susceptibility measurements indicate that they are the first two ferro–antiferromagnetic alternating chains of Ni^II.