Abstract
Synthesis and EPR characterization of a vanadyl complex salicylaldehyde Schiff base in methylene chloride is described. The vanadyl complex synthesized is S-methyl-N-salicylidenehydrazinecarbothioatophenanthrolineoxovanadium(IV). The magnetic parameters for this system are determined from computer simulation of the rigid limit EPR spectrum at 77 K and analysis of the isotropic spectrum at room temperature at X-band frequency. A good correlation is found between g∥ and A∥ of the system studied when compared with other model compounds of vanadyl complexes in which possible combinations of four ligands may include VO(N4), VO(N2SO), VO(N2S2), VO(NS3), and VO(S4). This information could be useful in characterizing non-porphyrin species of vanadium in asphaltenes.
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