Spectroscopic and Electrochemical Studies of Some Molybdenum and Ruthenium Complexes of N-[(2-pyridyl)methyl]-2,2′-dipyridylamine |
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| Authors: | Ramadan M Ramadan Mohamed S A Hamza Hassan A Mohamed Samir M El-Medani |
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| Institution: | (1) Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt;(2) Chemistry Department, Faculty of Science, Cairo University, El-Faiyum Branch, El-Faiyum, Egypt |
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| Abstract: | Interaction of the tripodal ligand N-(2-pyridyl)methyl]-2,2′-dipyridylamine (pmdpa) with Mo(CO)6] under reduced pressure gave two complexes Mo(CO)4(pmdpa)] and Mo(CO)2(pmdpa)2], depending on the mole ratio and reaction time. The i.r. spectra of the two complexes gave patterns in the metal carbonyl
region confirming the proposed structures. Reaction of Ru3(CO)12] with pmdpa in benzene gave the mononuclear complex Ru(CO)3(pmdpa)]. The electronic absorption spectra of the complexes exhibited visible transitions due to metal-to-ligand charge transfers.
Electrochemical investigation of the complexes showed some irreversible and quasi-reversible redox reactions due tautomeric
interconversions through electron transfer. |
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