Spectroscopic and molecular structure characterization of the bis(2-aminophenol)(5, 10, 15, 20-tetraphenylporphyrinato) cobalt(II) complex

Yassin Belghith, Anissa Mansour, Jean-Claude Daran, Habib Nasri

Laboratoire de Chimie de Coordination, CNRS UPR 8241, 205 Route de Norbonne, France.
Laboratoire de Physico-chimie des Matériaux, Faculté des Sciences de Monastir, Université de Monastir, Avenue de l’environn- ement, Tunisia.
Laboratoire de Physico-chimie des Matériaux, Faculté des Sciences de Monastir, Université de Monastir, Avenue de l’environnement, Tunisia.

DOI: 10.4236/ojic.2012.24012                

Abstract

The reaction of the cobalt(II) meso-tetraphenylporphyrin (TPP) starting material with an excess of 2-aminophenol (Hon) in organic solvents, yields the cobalt(II) porphyrin species [Co^II(TPP)(Hon)₂] (1). This compound has been characterized by UV-vis., IR, MSI MS and ¹H NMR spectroscopy. The UV-vis data and especially the proton NMR results, for the isolated product, indicated that complex 1 is a Co(II) mesoporphyrin derivative.The X-ray molecular structure of the title compound bis(2-aminophenol) (tetraphenylporphyrinato) cobalt(II) has been determined. This structure is the first one reported of a metalloporphyrin with a 2-aminophenol axial ligand species. The central metal is hexacoordinated by the four nitrogen atoms of the pyrrole rings and the nitrogen atoms of the two Hon trans axial ligands.

Keywords

Meso-Tetraphenylporphyrin Cobalt(II); 2-Aminophenol Cobalt(II) Complex; X-Ray Molecular Structure

Conflicts of Interest

The authors declare no conflicts of interest.

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