The Versatility of the Azido Ligand: Linkage of Ni^II Centers to Form a Chain with One End‐to‐End and Three End‐On Bridges in Alternation

Abstract

An average NiNNi angle of only 84° is found in the end-on bridges in complex 1. This small angle possibly explains the antiferromagnetic coupling of the nickel centers in 1. For more than 20 years it has been assumed that end-on coordination should lead to ferromagnetic coupling. The complex occurs as one-dimensional chains in the solid state.