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Vol. 34 No. 3 (2022): Vol 34 Issue 3, 2022

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Metallophilicity versus π-π Interactions: Argentophilicity in Porphyrin Dimer

https://doi.org/10.14233/ajchem.2022.23514
Pragati
Department of Chemistry, C.M.P. Degree College, Pragyagraj-211002, India
Akhilesh Kumar
Department of Chemistry, P.B.P.G. College, Prataphgarh-230002, India
Akhil K. Singh
Institute for Inorganic Chemistry, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
Arvind Kumar Pandey
Department of Chemistry, University of Allahabad, Pragyagraj-211002, India
Santosh Kumar Srivastava
Department of Chemistry, C.M.P. Degree College, Pragyagraj-211002, India

Corresponding Author(s) : Akhilesh Kumar

aks.modanwal@gmail.com

Asian Journal of Chemistry, Vol. 34 No. 3 (2022): Vol 34 Issue 3, 2022

Abstract

The interaction between two unsupported Ag(III)porphyrins, which exist as a metalloporphyrin dimer has been studied. The UV-visible spectrum shows only slight change in Soret band position indicative of Ag(III) formation. Optimized structure of the complexes has clearly revealed that only metal-centered oxidation results in short Ag-N (porphyrin) distance with large distortion in the porphyrin macrocycle. The dispersion effect brings two rings more closer to form an unprecedented Ag(III)···Ag(III) interaction and cancel out the π-π repulsion. The interaction energy was found to be 55.34 Kcal/mol and was further supported by electron localization function, AIM analysis. The Ag(III) dimer also gives pink emission at low temperature. This type of interaction can be exploited to design several light responsive materials and molecular semiconductors.

Keywords

Metallophilic interaction Metallophilic interaction Porphyrin dimer Porphyrin dimer QTAIM analysis QTAIM analysis Electronic structure Electronic structure
Pragati, ., Kumar, A., K. Singh, A., Kumar Pandey, A., & Kumar Srivastava, S. (2022). Metallophilicity versus π-π Interactions: Argentophilicity in Porphyrin Dimer. Asian Journal of Chemistry, 34(3), 557–561. https://doi.org/10.14233/ajchem.2022.23514
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