Synthesis and detailed characterization of cis-dichloridobispicolinatoruthenate(III) as solid and in solution |
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| Authors: | Olga Impert Grzegorz Wrzeszcz Tadeusz Muzio? Katarzyna Hrynkiewicz Natalia Olejnik |
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| Institution: | 1. Faculty of Chemistry, Nicolaus Copernicus University, Toruń, Polandoimpert@umk.pl;3. Faculty of Chemistry, Nicolaus Copernicus University, Toruń, Poland;4. Faculty of Biology and Environment Protection, Nicolaus Copernicus University, Toruń, Poland |
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| Abstract: | Three water-soluble ruthenium(III) compounds, Ycis-RuCl2(pic)2]?nH2O (where pic = picolinate anion, Y = H(Hpic)2+ (1), H2pic+ (2) or K+ (3), n = 2, 1.5, and 2.5, respectively), were synthesized and their X-ray structures determined. Compound 1 was fully characterized both as solid and in aqueous solution by elemental analysis, magnetic susceptibility measurements, EPR, IR and UV-visible spectroscopy, cyclic voltammetry, microwave plasma atomic emission, and mass spectrometry, capillary electrophoresis and chromatographic methods. It was shown that the coordination geometry around the low spin (S = ½) RuIII center is distorted octahedral with the chlorido ligands in a cis configuration. Furthermore, all the measurements showed that the structures in the solid state and solution are absolutely identical with the cis-RuCl2(pic)2]? anion being inert in aqueous solution. Microbial studies showed that 1 exerts a strong inhibition on the growth and increased mortality level of the bacterial strains – Escherichia coli, Pseudomonas sp., Sarcina sp., Micrococcus sp., Serratia sp., Bacillus cereus, Bacillus subtilis and yeast – Saccharomyces cerevisiae. |
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| Keywords: | Ruthenium(III) complex picolinic acid EPR flow cytometry antimicrobial activity |
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