FifteennewpolyesterligandswerepreparedbycopolymerizationofEDTA(ethylenediaminetertraaceticacid)dianhydrideorDTPA(diethylenetriaminepentaaceticacid)dianhydrideanddihydricalcoholordihydricphenol.Theirparamagneticmetalcomplexeswerealsosynthesized.Allpolyesterligandsandmetalcomplexeswerecharacterizedby^1HNMR,IRspectraandelementalanalyses.Preliminarystudyshowedthatthepolyestermetalcomplexeshadhigherrelaxationeffectivenessascomparedtocorrespondingsmallmolecularmetalcomplexes.