Poly­[di-μ₄-acetato-di-μ₂-azido-copper(II)­disodium(I)] at 150 K

In the structure of the title compound, [CuNa₂(C₂H₃O₂)₂(N₃)₂]_n, the copper(II) cation is coordinated by two N atoms of two symmetry-related azide anions and two O atoms of two symmetry-related carboxyl­ate anions within a distorted tetragonal plane. The sodium cation is surrounded by four O atoms of four symmetry-equivalent carboxyl­ate anions and two N atoms of two azide anions within an irregular polyhedron. The copper(II) cations are located on a twofold axis, whereas all other atoms are located in general positions. The copper(II) and sodium cations are connected via the carboxyl­ate anions into sheets parallel to (010). These sheets are linked by the azide anions via μ-N,N coordination into a three-dimensional coordination network.

Poly­[tetra-μ₂-azido-di-μ₂-4,4′-bi­pyridine-sodium(I)­iron(III)]

In the crystal structure of the title compound, [FeNa(N₃)₄(C₁₀H₈N₂)₂]_n, the Fe and Na atoms are coord­inated by four N atoms of azide anions and two N atoms of 4,4′-bi­pyridine ligands within distorted octahedra. The azide anions are located in general positions whereas the Fe and Na atoms, as well as the 4,4′-bi­pyridine ligands, are located on twofold axes. The iron and the sodium cations are connected via the 4,4′-bi­pyridine ligands into chains, which are linked by the azide anions into a three-dimensional coordination network.