Crystal structure of bis{μ-1-[(<i>E</i>)-(3-methoxyphenyl)diazenyl]naphthalen-2-olato-κ<sup>3</sup><i>N</i><sup>2</sup>,<i>O</i>:<i>O</i>}bis({1-[(<i>E</i>)-(3-methoxyphenyl)diazenyl]naphthalen-2-olato-κ<sup>2</sup><i>N</i><sup>2</sup>,<i>O</i>}copper(II))
Acta crystallographica. Section E, Crystallographic communications