The reactions of ruthenium(II) complexes, [RuHCl(CO)(PPh3)2(B)] [B = PPh3, pyridine (py) or piperidine (pip)], with bidentate Schiff base ligands derived by condensing salicylaldehyde with aniline, o-, m- or p-toluidine have been carried out. The products were characterised by analytical, i.r., electronic, 1H-n.m.r. and 31P-n.m.r. spectral studies and are formulated as [RuCl(CO)(L)(PPh3)(B)] (L = Schiff base anion; B = PPh3, py or pip). An octahedral structure has been tentatively proposed for the new complexes. The Schiff bases and the new complexes were tested in vitro to evaluate their activity against the fungus Aspergillus flavus.

Ruthenium(II) complexes containing bidentate Schiff bases and their antifungal activity

The selectivity and sensitivity of two colorimetric sensors based on the ruthenium complexes N719 [bis(2,2‘-bipyridyl-4,4‘-dicarboxylate)ruthenium(II) bis(tetrabutylammonium) bis(thiocyanate)] and ...

Reversible colorimetric probes for mercury sensing.

Synthesis, spectra, dioxygen affinity and antifungal activity of Ru(III) Schiff base complexes.

Mixed complexes of ruthenium(III) and ruthenium(II) with triphenylphosphine or triphenylarsine and other ligands

Neutral tetradentate N2O2 type complexes of Cu(II), Ni(II), Co(II) and Zn(II) have been synthesised using the Schiff base formed by the condensation of acetylacetone andp-anisidine. Microanalysis, molar conductance, magnetic susceptibility, IR, UV-Vis,1 H NMR, CV and EPR studies have been carried out to determine the structure of the complexes. From the data, it is found that all the complexes possess square-planar geometry. The EPR spectrum of the copper complex in DMSO at 300 K and 77 K was recorded and its salient features are reported. All the title complexes were screened for antimicrobial activity by the well diffusion technique using DMSO as solvent. The minimum inhibitory concentration (MIC) values were calculated at 37°C for a period of 24 h. It has been found that all the complexes are antimicrobially active and show higher activity than the free ligand.

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Synthesis, characterisation and electrochemical behaviour of Cu(II), Co(II), Ni(II) and Zn(II) complexes derived from acetylacetone and p -anisidine and their antimicrobial activity

β-Diketonato(triphenylphosphine) complexes of ruthenium(II)

The syntheses of some new β-diketone complexes of Ru(III) with triphenylphosphine and triphenylarsine have been described. Their spectral (IR and visible) and magnetic properties have been reported. Some of them show unusual magnetic moment.

K. Natarajan

Papers

Mixed complexes of ruthenium(III) and ruthenium(II) with triphenylphosphine or triphenylarsine and other ligands

β-Diketonato(triphenylphosphine) complexes of ruthenium(II)

Some New β-Diketone Complexes of Ruthenium(III) with Triphenylphosphine and Triphenylarsine

Ruthenium(III) and ruthenium(II) complexes containing triphenylarsine and other ligands

New ruthenium(III) and ruthenium(II) complexes with triphenylarsine and triphenylarsine oxide