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The lanthanide complexes of acetylacetonate and 5,10,15,20-tetra[para-(chlorobenzoyloxy)phenyl]porphyrin having a general formula Ln[(cbop)4p]acac(where Ln=Tb,Ho,Er,Tm;cbop=(4-chlorobenzoyloxy)phenyl;Hacac=acetylacetone;p=porphyrin) were prepared and characterized.The structure of the complexs was proposed.