Crystal structure of poly[<i>N</i>,<i>N</i>-diethyl-2-hydroxyethan-1-aminium [μ<sub>3</sub>-cyanido-κ<sup>3</sup><i>C</i>:<i>C</i>:<i>N</i>-di-μ-cyanido-κ<sup>4</sup><i>C</i>:<i>N</i>-dicuprate(I)]]
Acta crystallographica. Section E, Crystallographic communications