Synthesis, spectroscopic, cyclic voltammetry properties and molecular structure of the thiocyanato-N meso-tetratolylporphyrinato zinc(II) ion complex

Publication date: 5 April 2017
Source:Journal of Molecular Structure, Volume 1133
Author(s): Zouhour Denden, Wafa Harhouri, Leila Ben Haj Hassen, Yoann Rousselin, Eric Saint-Aman, Habib Nasri
This paper describes the synthesis of the (thiocyanato-N)(meso-tetratolylporphyrinato)zinc(II) chlorobenzene monosolvate complex with the formula [K(2,2,2-crypt)][Zn(TTP)(NCS)]·C6H5Cl (I) using the cryptand-222 to solubilize potassium thiocyanate in chlorobenzene solvent. Complex (I) has been characterized by elementary analysis, IR, UV–vis, ¹H NMR and MS, and the structure of this new zinc(II) metalloporphyrin been examined crystallographically. A cyclic voltammetry investigation was also carried out on this species. The title compound crystallizes in the triclinic, space group P-1, with a = 11.5151(7) Å, b = 15.212(10) Å, c = 20.1093(12) Å, α = 80.428(4)°, β = 74.926(4)°, γ = 84.704(4)°, V = 3364.7(4) ų, Z = 2 and Dcal = 1.303 g cm⁻³. The porphyrin macrocycle of (I) exhibits moderate ruffling and saddle distortions. In the crystal, the [Zn(TTP)(NCS)]⁻ ion complexes, the [K(2,2,2-crypt)]⁺ counterions and the chlorobenzene solvent molecules are involved in a number of weak C^__H⋯S and C–H⋯π intermolecular interactions forming a three-dimensional framework.

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