The Synthesis, characterization and antimicrobial activity of organometallic Ru(II) complex containing phenylthiourea ligand

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Nararak Leesakul
Rachna Neang
Parichad Chuklin
Saowanit Saithong
Luksamee Vittaya

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A novel organometallic ruthenium(II)-p-cymene complex, [Ru(η6-p-cymene)(ptu)2Cl]SH, where ptu= N-phenylthiourea, was synthesized. Its structure was characterized by single crystal x-ray diffraction, elemental analysis and spectroscopic techniques (1H-NMR and FTIR). The geometrical structure of the complex was tetrahedral, distorted by η6 π-bonding to the p-cymene ring, with one chloro ligand and two molecules of ptu ligand.  Antibacterial and antifungal activities were investigated. The [Ru(η6-p-cymene)(ptu)2Cl]SH complex produced  MIC/MBC values of 32/32 µg/mL against methicillin resistant Staphylococcus aureus (MRSA), Staphylococcus aureus ATCC25923 (SA) and flucytosine-resistant Cryptococcus neoformans ATCC90113 flucytosine – resistant, CN90113 but apparently exhibited no antifungal against Microsporum gypseum clinical isolate.  

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