Synthesis, crystal structure, and properties of an azido-bridged 1D nickel hexaazamacrocyclic complex

A new complex of [Ni(C15H32N6)(N3)]ClO4 · H2O was obtained by the reaction of macrocyclic precursor complex [Ni(C15H32N6)]ClO4 with sodium azide in water solution, and characterized by EA, IR, PXRD and single-crystal X-ray diffraction (CIF file CCDC no. 930570). Single X-ray diffraction analysis reveals that the central nickel(II) ion displays six-coordinate octahedral coordination geometry by coordination with four nitrogen atoms of N3− macrocyclic ligand and two nitrogen atoms of ligand. In this complex, each μ1,3-N3− binds two nickel(II) ions, resulting a 1D chain. Magnetic measurements have been performed on the complex, showing strong antiferromagnetic coupling interaction within the metal center.