Reaction of Zn(NO3)2.6H2O with 5-(isonicotinamido) isophthalic acid(H2INAIP) in N,N-dimethylformamide(DMF) affords a new three-dimensional(3D) coordination polymer {[Zn(INAIP)(DMF)].0.5DMF.4H2O}n(1).The X-ray crystallographic structural analysis reveals that complex 1 is a 3D porous framework containing a potential open metal site inside the pores.Topology analysis confirms that complex 1 is a two-fold interpenetrated(10,3)-b net with both metal ion and ligand acting as 3-connecting nodes.The thermal stability,variable temperature X-ray diffraction pattern and N2 adsorption property of the complex are investigated. Reaction of Zn (NO3) 2.6H2O with 5- (isonicotinamido) isophthalic acid (H2INAIP) in N, N-dimethylformamide (DMF) affords a new three-dimensional (3D) coordination polymer {[Zn (INAIP) (DMF)]. 0.5DMF.4H2O} n (1). The X-ray crystallographic structural analysis reveals that complex 1 is a 3D porous framework containing a potential open metal site inside the pores. Theoretical analysis confirms that complex 1 is a two-fold interpenetrated , 3) -b net with both metal ion and ligand acting as 3-connecting nodes. The thermal stability, variable temperature X-ray diffraction pattern and N2 adsorption property of the complex are investigated.