Coordination modes of salicylaldehyde derivatives in the ruthenium(II) nitrosyl and bis(2,2′-bipyridine) ruthenium(II) complexes

The effect of halogenation of salicylaldehyde on the antiproliferative activities of {Δ/Λ-[Ru(bpy)2(X,Y-sal)]BF4} complexes

“…To explore the structures of ruthenium complexes with salicylaldehyde derivatives, C. Chen et al have studied the coordination modes of salicylaldehyde derivatives in the Ru( ii ) nitrosyl and Ru( ii ) bis(2,2′-bipyridine) complexes, with the cationic ruthenium complex [Ru(bpy)2(κ2-O,O-salCl)](PF 6 ) being similar to ClByRu(3 ). 29 The antitumoral and antimicrobial biological activity of some ruthenium carbonyl derivatives of the bis-(salicylaldehyde)phenylenediimine Schiff base ligand have been studied. The data showed that the complexes have the capacity of inhibiting the metabolic growth of the investigated bacteria to different extents, which may indicate their broad-spectrum properties, especially for the bipyridine derivative.…”

Investigating the Cytotoxicity of Ru(II) Polypyridyl Complexes by Changing the Electronic Structure of Salicylaldehyde Ligands

“…It should be noted that bite angles near to 80°for phen ligands are usual for this class complex that is because of geometrical requirements of the chelate rings formed by the phen ligands. 22,59 Photophysical Properties. The absorption and emission spectra of compounds 2, 3, 10, and 11 recorded in DMSO at room temperature as examples of all compounds are shown in Figure 5 (up).…”

“…The most obvious distortion of the ideal octahedral geometry results from the constrained N–Ru–N bite angles of the phen ligands, which are near 80° for all complexes (Table ). It should be noted that bite angles near to 80° for phen ligands are usual for this class complex that is because of geometrical requirements of the chelate rings formed by the phen ligands. , …”

Palladium(II) Complexes of Substituted Salicylaldehydes: Synthesis, Characterization and Investigation of Their Biological Profile

“…Therefore, the compounds may get transported by the albumins toward their potential biological targets. On the other hand, the K values are significantly lower than the constant of avidin, K avidin ~10 15 M −1 (it is considered as the limit between reversible and irreversible interactions), suggesting the interaction is reversible so that the complexes may get released when they approach their targets [50].…”

“…The above-mentioned drawback could be overcome by using ligands with strong chelating ability, such as substituted salicylaldehydes (X-saloH). Substituted salicylaldehydes are able to coordinate with metal ions, mainly in a chelating bidentate (O,O′-) manner, through their carbonyl and phenolato oxygen atoms, while there have been very few examples of different coordination modes [ 12 , 13 , 14 , 15 , 16 ].…”