Chiral heterometallic 3d–3d azido complex: Synthesis, structure and magnetic properties

A novel three-dimensional chiral heterometallic 3d–3d azido complex, [Co2Zn(N3)4(pyzc)2]∞(1) (pyzc = 2-pyrazinecarboxylate), was obtained by assembling CoII, ZnII, azido, and pyrazine carboxylate under solvothermal condition. The structure of the complex can be described as end-on (EO) azido, end-to-end (EE) azido mixed bridged alternate Co–Zn chains linked by the 2-pyrazinecarboxylate. Magnetic studies indicate that dominant anti-ferromagnetic coupling interactions exist in the complex.