Contact
    Start Publications Synthesis, structure and biological evaluation as antibacterial ...
    ←  Publication Finder
    KSV NIMA

    Synthesis, structure and biological evaluation as antibacterial agents of Ru(II)-p-cymene-aryldicyclohexylphosphine complexes

    Year: 2023

    Journal: Inorganica Chimica Acta, Volume 558, 01/12/2023, page 121749

    Authors: do Rosario, Valéria Giovana Bucco; Marszaukowski, Flávia; Dimbarre Lao Guimarães, Ivelise; Gobbo Maranha, Filipy; Francieli Mika, Bruna; Bonifácio Rosa, Guilherme; Andrade Pessôa, Christiana; Augusto Pontes Ribeiro, Renan; Inaba, Juliana; Boeré, René T.; Wohnrath, Karen

    Keywords: Density functional theory calculations; Half-sandwich complex; Membrane model; Molecular docking; Ruthenium; X-ray structure

    The syntheses of two neutral complexes with formula [Ru(η6-p-cymene)(P(Cy)2Ar)Cl2], where P(Cy)2Ar = dicyclohexylphosphine, Ar = Ph (1) and 4-(N,N-dimethylamino)phenyl (4-dma-ph) (2) were performed. Both complexes were fully characterized by molar conductivity, elemental analysis and spectroscopic methods. The molecular structures of 1 and 2 that were elucidated by single crystal X-ray diffraction show that both structures adopt the pseudo-octahedral geometry characteristic of organoruthenium species. Absorption spectra and electrochemical behavior of the complexes were also evaluated and their results were supported by DFT analysis. Both complexes were active against tested bacterial strains: Gram-positive (Staphylococcus aureus) and three species Gram-negative (Escherichia coli, Klebsiella pneumoniae and Pseudomonas aeruginosa). 2 shows higher bacterial growth inhibition activity compared to 1, which might be due to its molecular structure that could facilitate the interaction among this complex and the biological environment. These results agreed with the Langmuir monolayer and molecular docking studies. 1 and 2 change the pressure isotherms of 1,2-dioleoyl-sn-glycero-3-phosphatidylglycerol, a phospholipid used as a bacterial membrane model. Molecular Docking studies performed with S. aureus and E. Coli bacteria using the Topoisomerase IV (4URN) and DNA Gyrase as receptor (1KZN), showed that both complexes have potential antimicrobial effects compared to the ciprofloxacin.
    View publication