The addn. of metal salts to the polymeric spacer unit bis(terpyridinyl)-poly(ethylene oxide) provides water-sol. high mol. wt. coordination polymers with interesting soln. properties. The incorporated charges might lead to enhanced performance as flocculation agents. The reversibility of the metal complex moieties facilitates applications as intelligent hydrogels for drug delivery. Here we present the synthesis of cobalt(II)acetate and iron(II)chloride coordination polymers and the investigation of the influence of the counter ions on the polyelectrolyte behavior in sol