The crystal structure of Zn(H2O)2(phen)2DBDA (1) (DBDA=2,2′-dimethoxy-1,1′-binaphthylene-6,6′- disulfonate, phen =1,10-phenanthroline) involves the anion part (2,2′-dimethoxy-1,1′-binaphthylene-6,6′- disulfonate ) and the cation part which compose of a octahedron coordinated zinc center surrounded by two water and four nitrogen atoms from two phen rings, the 3D packing structure was formed through the strong H-bonding interaction between sulfonate and water. CCDC: 277923.