Two new Zn(II) compounds, [Zn(L)(2)(bpy)] (1) and {[Zn(L)(2)(bpp)]}(n) (2) (L=sulfonamide pyrimidine, bpy=2,2'-bipyridine, bpp=1,3-bis(4-pyridyl)propane), have been synthesized and characterized by single crystal X-ray diffraction, powder X-ray diffraction (PXRD), thermal analysis, elemental analysis, IR, UV-Vis and fluorescence. Single crystal X-ray analysis reveals that complex 1 is a mononuclear structure and the Zn(I) ion exhibits a tetragonal pyramidal coordination geometry. Complex 2 is a one-dimensional structure and the Zn(II) ion is a tetrahedral coordination geometry. Thermal analyses show that complex 1 and 2 have high thermal stability. CCDC: 935049, 1; 935050, 2.