TRANSITION METAL COMPLEXES WITH EDDA-TYPE LIGANDS - A REVIEW

ABSTRACT The review summarizes the results of recent studies on edda-type metal complexes. It focuses on work published during the period 1984–2001. The metals include are Co, Cr, Cu, Ni, Zn, Mn, Sn, Fe, V, Rh, Pt, Ru, whereas edda-type represents ethylenediamine-N,N′-diacetate, ethylenediamine-N,N-di-acetate, N,N′-dimethylethylenediamine-N,N′-diacetate, N,N′-diethylethylenediamine-N,N′-diacetate, 1,2-cyclo-hexanediamine-N,N′-diacetate, N,N′-dimethyl-1,2-cyclohexanediamine-N,N′-diacetate, ethylenediamine-N,N′-di-3-propionate, N,N′-dimethylethylenediamine-N,N′-di-3-propionate, ethylenediamine-N,N′-di-S-α-propionate, N,N′-dimethyl-ethylenediamine-N,N′-di-α-propionate, 1,3-propanediamine-N,N′-diacetate (trimethylenediamine-N,N′-diacetate), 1,3-propanediamine-N,N′-di-3-propionate (trimethylenediamine-N,N′-di-3-propionate), N,N′-dimethylethylenediamine-N,N′-di-α-butyrate, N,N′-diethylethylenediamine-N,N′-di-α-butyrate, 1-diethylenetriamineacetate (8-amino-3,6-diazao-ctanoate), ethylenepropylenetriamineacetate (9-amino-3,6-diazaoc- tanoate), dipropylenetriamineacetate (10-amino-3,6-diazaoc-tanoate), N,N-bis(2-aminoethyl)glycinate, N,N-bis(3-aminopropyl)glycinate, N-(2-aminoethyl)-N-(3-aminopropyl)glycinate, N-(2-aminoethyl)iminodiacetate (N-(2-aminoethyl)-N-carboxymethylglycine), N-(3-aminopropyl)imino diacetate tetradentate ligands. This paper provides a review of these complexes including their syntheses and X-ray crystal structures, spectroscopic (IR, Raman, NMR, ESR, electronic absorption and CD) measurements, electrochemistry, kinetic and thermodynamic information, magnetic properties, hydrolysis phenomena as well as chromatographic studies.