[5,10,15,20-Tetrakis(4-pyridyl)porphyrinato]zinc(II) acetic acid clathrate, and its unique polymeric honeycomb architecture

The crystal structure of the title compound, [Zn( C40H24N8)]center dot 1.6C(2)H(4)O(2) has been determined at ca 110 K. The centrosymmetric metalloporphyrin compound forms a self-assembled honeycomb architecture, with open channels extending parallel to the c axis of the unit cell. The compound crystallizes as an acetic acid clathrate. The guest species, which are included in the interporphyrin channels, hydrogen bond to the porphyrin framework.