Normal and mixed-ligand chelates of vanadyl(IV) with Schiff bases

Article abstract of DOI:10.1021/ic50038a024

Vanadyl(IV) chloride reacts with ring-substituted salicylaldehydes and N-substituted ethylenediamines to form two series of compounds, normal or mixed-ligand chelates, according to the nature of substituents at the nitrogen ethylenediamine atom. Visible spectra suggest a five-coordinate structure for normal complexes, resulting from coordination of two Schiff bases acting bidentately around a vanadyl unit, and a hexacoordinate structure for mixed-ligand complexes, resulting from coordination of a salicylaldehyde group and a Schiff base acting tridentately around a vanadyl unit.