Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Synthesis, Characterization and Antibacterial Studies of New Cu(II) and Pd(II) Complexes with 6-Methyl-2- thiouracil and 6-Propyl-2-thiouracil

Version 1 : Received: 6 November 2023 / Approved: 6 November 2023 / Online: 7 November 2023 (10:37:37 CET)

A peer-reviewed article of this Preprint also exists.

Marinova, P.; Hristov, M.; Tsoneva, S.; Burdzhiev, N.; Blazheva, D.; Slavchev, A.; Varbanova, E.; Penchev, P. Synthesis, Characterization, and Antibacterial Studies of New Cu(II) and Pd(II) Complexes with 6-Methyl-2-Thiouracil and 6-Propyl-2-Thiouracil. Appl. Sci. 2023, 13, 13150. Marinova, P.; Hristov, M.; Tsoneva, S.; Burdzhiev, N.; Blazheva, D.; Slavchev, A.; Varbanova, E.; Penchev, P. Synthesis, Characterization, and Antibacterial Studies of New Cu(II) and Pd(II) Complexes with 6-Methyl-2-Thiouracil and 6-Propyl-2-Thiouracil. Appl. Sci. 2023, 13, 13150.

Abstract

The primary objective of this study is to synthesize, elucidate the structural properties, and ex-plore the biological activity of novel metal complexes derived from 6-methyl-2-thiouracil and 6-propyl-2-thiouracil. The paper outlines a synthesis method and assesses the antimicrobial activ-ity of newly formed Cu(II) and Pd(II) complexes with two substituted 2-thiouracil ligands. The structural attributes of these newly developed compounds are thoroughly discussed based on data derived from melting point analysis, MP-AES for Cu and Pd, UV-Vis, IR, ATR, 1H NMR, 13C NMR and Raman spectroscopy. The interpretation of the complex spectra is assisted by the data for 6-methyl-2-thiouracil and 6-propyl-2-thiouracil obtained from 1H-1H COSY, DEPT-135, HMBC and HMQC spectra. In addition, the antimicrobial activity of these complexes and the free ligands are assessed against both Gram-positive and Gram-negative bacteria, as well as yeasts.

Keywords

6-methyl-2-thiouracil, 6-propyl-2-thiouracil; complexation, copper(II) complexes, palladium(II) complexes, antimicrobial activity

Subject

Chemistry and Materials Science, Applied Chemistry

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