Many drugs possess modified pharmacological and toxicological potentials when administered in the form of their metal complex. All sulfonamides have one free amino group, which offers an extendable chemistry and makes them interesting potential ligand. Sulfapyridine (SPY) is one of the significant members of sulfa family. Sulfapyridine is widely used as an antibacterial, antithy-roid and antidiabetic drug. To look for a modified and alternative of SPY, we synthesize its metal (mercury) complex by chemical root and reflux method and characterized by few spectroscopic techniques like FT-IR, NMR and PL. Powder XRD data of the metal (mercury) complex of SPY is recorded using Rigaku Ultima IV X-ray diffractometer at Department of physics.