Synthesis and spectral studies on heterobimetallic complexes of manganese and ruthenium derived from bis[N-(2-hydroxynaphthalen-1-yl)methylene]oxaloyldihydrazide |
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Authors: | NK Kar MK Singh RA Lal |
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Institution: | 1. Department of Chemistry, Tripura University, Suryamaninagar, Tripura 799130, India;2. Department of Chemistry, North-Eastern Hill University, Shillong, Meghalaya 793022, India |
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Abstract: | The complex Mn(L)(H2O)2] H4L = bisN-(2-hydroxynaphthalen-1-yl)methylene]-oxaloyldihydrazide] reacts with activated ruthenium(III) chloride in methanol in 1:1.2 M ratio under reflux resulting in heterobimetallic complex of the composition Mn(L)(H2O)4RuCl2]Cl. The complexes of the composition Mn(L)(A)4RuCl2]Cl were obtained when the above reaction was carried out in presence of heterocyclic nitrogen bases(A) such as pyridine(py), 3-picoline(3-pic) and 4-picoline(4-pic). The molar conductance values for these complexes in DMF(N,N-dimethyl formamide) solution indicate their 1:1 electrolytic nature. Magnetic moment values suggest that these heterobimetallic complexes contain Mn(IV) and Ru(III) in the same structural unit. Electronic spectral studies suggest six coordinated metal ions in these complexes. IR spectra reveal that the H4L ligand coordinates in its keto-form to Mn(IV) and Ru(III). |
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Keywords: | Heterobimetallic complexes Manganese Ruthenium |
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