Axial coordination phenomena in highly substituted porphyrins. Crystal structure of the polymeric (2,3,7,8,12,13,17,18-octaethyl-5,10,15,20-tetranitroporphyrinato)zinc(II), [{Zn(oetnp)}n]
Abstract
The polymeric structure of the sterically strained and non-planar porphyrin [{ZnIIoetnp}n] is determined by X-ray crystallography; polymerization is achieved by utilization of the nitro-groups for axial ligation to the zinc(II) centre.