Square-grid coordination networks of (5,10,15,20-tetra-4-pyridylporphyrin- ato)zinc(II) in its clathrate with two guest molecules of 1,2-dichloro-benzene: Supramolecular isomerism of the porphyrin self-assembly

Rajesh Koner, Israel Goldberg

Research output: Contribution to journalArticlepeer-review

Abstract

The title compound, (5,10,15,20-tetra-4-pyridylporphyrinato)zinc(II) 1,2-dichloro-benzene disolvate, [Zn(C40H24N 8)]̇2C6HH4HCl2 H, contains a clathrate-type structure. It is composed of two-dimensional square-grid coordination networks of the self-assembled porphyrin moiety, which are stacked one on top of the other in a parallel manner. The inter-porphyrin cavities of the overlapping networks combine into channel voids accommodated by the dichloro-benzene solvent. Mol-ecules of the porphyrin complex are located on crystallographic inversion centres. The observed two-dimensional assembly mode of the porphyrin units represents a supra-molecular isomer of the unique three-dimensional coordination frameworks of the same porphyrin building block observed earlier. The significance of this study lies in the discovery of an additional supra-molecular isomer of the rarely observed structures of metalloporphyrins self-assembled directly into extended coordination polymers without the use of external ligand or metal ion auxiliaries.

Original languageEnglish
Pages (from-to)m139-m142
JournalActa Crystallographica Section C: Crystal Structure Communications
Volume65
Issue number3
DOIs
StatePublished - 2009

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