1-(4-tert-butylphenyl)4-(4-trifluoromethylphenyl)carbonylthiosemicarbazide (OBS) and was synthesized by reaction of 4-tert-Butylbenzoic hydrazide with 4-(trifluoromethyl)phenylisothiocyanate. The influence many metal cations on the spectroscopic properties compound investigated in dmso-water (1:1) means emission spectrometry.The a series ions including Cu2+,Co2+ , Al3+,Cr3+,Fe3+, Pb2+, Ni2+, Cd...