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Synthesis, characterization, and computational study of copper bipyridine complex [Cu (C18H24N2) (NO3)2] to explore its functional properties

Authors
  • Alarfaji, Saleh S.1
  • Hussain, Sajjad2
  • Al-Sehemi, Abdullah G.1
  • Muhammad, Shabbir3
  • Khan, Islam Ullah4
  • Rabbani, Faiz5
  • Gilani, Mazhar Amjad6
  • Ullah, Hamid7
  • 1 College of Science, King Khalid University, 61413, P.O. Box 9004 , (Saudi Arabia)
  • 2 Faculty of Basic Sciences and Mathematics, Minhaj University, Pakistan , (Pakistan)
  • 3 College of Science, King Khalid University, P.O. Box 9004, 61413 , (Saudi Arabia)
  • 4 University of Mianwali, 42200 , (Pakistan)
  • 5 COMSATS University Islamabad, Vehari Campus, Pakistan , (Pakistan)
  • 6 COMSATS University, Lahore Campus, Pakistan , (Pakistan)
  • 7 Balochistan University of Information Technology Engineering and Management Sciences (BUITEMS), 87300 , (Pakistan)
Type
Published Article
Journal
Zeitschrift für Naturforschung C
Publisher
Walter de Gruyter GmbH
Publication Date
Dec 02, 2021
Volume
77
Issue
5-6
Pages
241–251
Identifiers
DOI: 10.1515/znc-2021-0248
Source
De Gruyter
Keywords
License
Yellow

Abstract

In the present study, copper (II) complex of 4, 4′-di-tert-butyl-2,2′-bipyridine [Cu (C18H24N2) (NO3)2], 1 is investigated through its synthesis and characterization using elemental analysis technique, infra-red spectroscopy, and single-crystal analysis. The compound 1 crystallizes in orthorhombic space group P212121. The copper atom in the mononuclear complex is hexa coordinated through two nitrogen and four oxygen atoms from bipyridine ligand and nitrate ligands. The thermal analysis depicts the stability of the entitled compound up to 170 °C, and the decomposition takes place in different steps between 170 and 1000 °C. Furthermore, quantum chemical techniques are used to study optoelectronic, nonlinear optical, and therapeutic bioactivity. The values of isotropic and anisotropic linear polarizabilities of compound 1 are calculated as 41.65 × 10−24 and 23.02 × 10−24 esu, respectively. Likewise, the static hyperpolarizability is calculated as 47.92 × 10−36 esu using M06 functional compared with para-nitroaniline (p-NA) and found several times larger than p-NA. Furthermore, the antiviral potential of compound 1 is studied using molecular docking technique where intermolecular interactions are checked between the entitled compound and two crucial proteins of SARS-CoV-2 (COVID-19). Our investigation indicated that compound 1 interacts more vigorously to spike protein than main protease (MPro) due to its better binding energy of −9.60 kcal/mol compared with −9.10 kcal/mol of MPro. Our current study anticipated that the above-entitled coordination complexes could be potential candidates for optoelectronic properties and their biological activity.

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