New Dinuclear Ru₂(CO)₄ Sawhorse‐Type Complexes Containing Bridging Carboxylato Ligands

Abstract

Abstract. The thermal reaction of Ru 3 (CO) 12 with ethacrynic acid, 4-[bis(2-chlorethyl)amino]benzenebutanoic acid (chlorambucil), or 4-phenylbutyric acid in refluxing solvents, followed by addition of two-electron donor ligands (L), gives the diruthenium complexes Ru 2 (CO) 4

Ru2(CO)4(OOCR)2L2 sawhorse-type complexes containing axial 5-(4-pyridyl)-10,15,20-triphenylporphyrin ligands

“…The two carboxylato bridges give rise to two m (OCO) absorptions between 1550 and 1430 cm À1 that correspond to the asymmetrical and the symmetrical stretching frequencies of the three-atom oscillators. Moreover, due to the presence of the porphyrinic axial ligands, a strong absorption centred at 1595 cm H} NMR spectra, the peaks of the terminal carbonyl groups and of the carboxylato bridges are found around 180 and 205 ppm, respectively, in agreement with those reported in the literature [7][8][9].…”

Sawhorse-type diruthenium tetracarbonyl complexes containing porphyrin-derived ligands as highly selective photosensitizers for female reproductive cancer cells

“…Our new organometallic-porphyrin complexes displayed no cytotoxicities in the dark for concentrations up to 100 lM for all the cell lines tested. This is in accordance with non-porphyrin-containing diruthenium tetracarbonyl sawhorse-type complexes which show no cytotoxicity on the A2780 ovary carcinoma cell line [31] and with other diruthenium carboxylate derivatives which presented some IC 50 values greater than120 lM in the HeLa cell line [32].…”

Half-Sandwich Ru(II) Halogenido, Valproato and 4-Phenylbutyrato Complexes Containing 2,2′-Dipyridylamine: Synthesis, Characterization, Solution Chemistry and In Vitro Cytotoxicity

“…From the coordination chemistry point of view, this is the first report on Ru(II) complexes containing the VP ligand. Regarding the ruthenium complexes containing the PB ligand, they have been used as either bidentate O,O-coordinated ligand in the [Ru(μ-PB)(CO)2(L 2 )]2 complex, or as η 6 -coordinated 4-phenylbutyric acid (PBA) in the [Ru(η 6 -PBA)(L 3 )Cl] + or [Ru(η 6 -ar)(η 6 -PBA)] 2+ complexes; L 2 = pyridine or triphenylphosphane, L 3 = e.g., 1,10-phenanthroline or benzaldehyde monothiosemicarbazone, and ar = e.g., 1,2,3,4,5,6-hexamethylbenzene [12][13][14]. However, to the best of our knowledge, neither VP nor PB ligand has been reported in the literature to date as the monodentate O-donor ligand of any ruthenium complex.…”