Metal Chelates of o-Phenylenediaminb bis-Isatin Schiff Base with La(III), Ce(III), Th(IV), UO2(II), Ag(I) AND Hg(II)

Hassaan, Aly M. A.; Shehata, Aziza K.

doi:10.1080/15533179308016863

Cited by 3 publications

(1 citation statement)

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“…The formation of the Ru-O and Ru-N bands is further supported by the appearance of ν M-O and ν M-N band in the regions 576 -541 cm -1 and 492 -475 cm -1 respec- Complex tively in the spectra of the chelates [21,28,29]. The most important conclusion drawn from the infrared spectral evidence is that the diamine bis(isatin) Schiff base ligand is acting as chelating agent towards the central metal ion as dibasic ONNO tetradentate ligand, via the two coordinating sites of nitrogen atoms and two negatively charged oxygen atoms of isatin residues forming fivemembered chelating rings [30]. In addition, other characteristic bands due to PPh 3 and AsPh 3 are also present around 1438 cm -1 [31], in the spectra of Schiff base complexes.…”

Section: Ir Spectramentioning

confidence: 99%

Synthesis, spectral characterization, catalytic andbiological studies of new Ru(II) carbonyl Schiff base complexes of active amines

Raju¹,

Balasubramanian²,

Jayabalakrishnan³

et al. 2011

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The synthesis and characterization of several hexa – coordinated Ru(II) complexes of the type [Ru(CO)(B)(L)] (B = PPh3/AsPh3/py/pip; L = di-basic tetradentate ligand derived from the condensation of isatin with diamines) were reported. IR, electronic, 1H- NMR, 31P-NMR of the complexes are discussed. An octahedral geometry has been tentatively proposed for all these complexes. The new complexes have been tested for the catalytic activity in the reaction of oxidation of alcohols in the presence of N-me- thylmorpholine–N-oxide as co-oxidant. The new complexes were also exhibited antimicrobial investigations

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