A rare Cu(I)/Cu(II)-azide complex showing honeycomb-type net structure: Synthesis, structure, and magnetic studies

Ligand directed structural diversity and magnetism in copper(ii)–azido assemblies with isomeric aminopyridines: synthesis, structure, magnetism and theoretical studies

Ligand geometry and molar ratios play an influential role in directing the supramolecular assemblage and associated magnetic properties as described for the Cu(ii) complexes involving isomeric aminopyridines and azide.

An azide-bridged copper(II) complex: poly[piperazine-1,4-dium [tetra-μ₃-azido-κ¹²N¹:N¹:N¹-hexa-μ₂-azido-κ¹²N¹:N¹-di-μ₂-azido-κ⁴N¹:N³-pentacopper(II)] tetrahydrate]

A new Cu(II)-azide complex, {(C4H12N2)[Cu5(N3)12]·4H2O}n, has been synthesized by the reaction of piperazine, Cu(OAc)2·2H2O (OAc is acetate) and NaN3. In the structure, μ2-1,1- and μ3-1,1,1-azide anions bridge five Cu(II) cations to form a linear pentanuclear cluster unit, which is further linked by μ2-1,1- and μ2-1,3-azide anions to form a two-dimensional condensed [Cu5(N3)12]n layer. The diprotonated piperazine and the solvent water molecules are hydrogen bonded to the coordination layers to form a three-dimensional supramolecular network.