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New tanthanide comptexes of acetylacetonate-meso-tetra-(4-pyridyt)porphyrin(LnTpypacac,Ln=Dy,Ho,Yb,Lu,H<sub>2</sub>Tpyp=tetra-(4-pyridyl)-porphyrin,Hacac=acetylacetone)were prepared byreaction of Ln(acac)<sub>3</sub>·3H<sub