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A new metal-organic coordination compound framework formulated {[Pb(PTCP)(2,5-pydc)]2·H2O}n(1)(PTCP=2-phenyl-1H-1,3,7,8-tetraazacyclopenta[1]-phenanthrene,H2pydc=pyridine-2,5-dicarboxylic acid)has been prepared in the hydrothermal condition and characterized by single-crystal X-ray diffraction,elemental analysis,IR and TG.It crystallizes in monoclinic,space group C2/c with a=2.129 2(4)nm,b=1.111 2(2)nm,c=2.049 4(4)nm,β=105.02(3)°,V=4.683 2(16)nm3,Z=4,Pb2C52H32N10O9,Mr=1 355.26,Dc=1.922 g·cm-3,F(000)=2 600,S=0.825,R1=0.056 2 and wR2=0.168 9.In the crystal,the Pb atom is five-coordinated by three N and two O atoms.The complex forms a one-dimensional zigzag polymeric chain along the b axis which is stacked to furnish a twodimensional supramolecular layer structure via aromatic π-π interactions in the ab plane.In addition,hydrogen bonds are observed in the compound which play an important role in forming the final structure.Solid-state fluorescence spectrum of 1 exhibits the maximum emission peak at 621 nm.CCDC:791183.