A three‐dimensional porous framework complex, poly[[bis(ethylenediamine)copper(II)] [potassium hexacyanocobalt(III)]]

The crystal structure of the title compound, {[Cu(en) 2 ][KCo(CN) 6 ]} n (en is ethylenediamine, C 2 H 8 N 2 ), reveals a novel three-dimensional porous framework in which [Cu(en) 2 ] 2+ acts as a template and K + as a connecting unit. The Cu atom lies on an inversion centre and the Co and K atoms are on twofold axes.