Complexes of zirconium (IV)‎ with some benzoin derivatives

Abstract EN

Different types of complexes with different stoichiometries, stereochemistries and coordination numbers have been isolated for Zirconium (IV).

These complexes having the general formulae [ZrO(H2L)2] C12, [Zr(H2L)2]X4, [Zr(OH)2L] and (Zr(L)2] (where H2L and L represent the neutral and dibasic forms of the ligand derived from the condensation of benzoin with o-phenylenediamine and X represents chloride, bromide and nitrate ions) were prepared by the reaction of zirconyl chloride, zirconium chloride, ziroconium bromide and zirconium nitrate in both neutral and basic media.

The isolated complexes were characterized by elemental analysis, molar conductance, molecular weight, infrared and *H NMR spectral measurements.

The ligand in these complexes acts in three different ways, neutral bi-and tetradenate and dibasic tetradentate.