We describe here the synthesis and characterization of new sulfonated and carboxylated-containing N-donor ligands [Na4(edts)]·4H2O (2), [Na2(dmeddp)]·2H2O (3) and [Na4(edtp)]·H2O (4) (edts = ethylene-diamine- N,N,N′,N′-tetraethylenesulfonate ion; dmeddp = dimethyl-ethylene-diamine-N,N,N′,N′-tetra-3-propionate ion; edtp = ethylene-diamine-N,N,N′,N′-tetra-3-propionate ion) and their corresponding metal (Ni, Co, Cu and Zn) complexes. Mainly, UV-Vis and a computer aided analysis of the EPR spectra provided information on the geometry and structure of the complexes in solution. Some of the metal complexes inhibit HIV replication when treating both pre- and post-infected PBMC cells, and hustle the inhibitory effect compared to the metal salts alone.
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