The title compound bis(1-(4-(dimethylamino)benzylidene)-4-phenylthiosemicar-bazato)-palladium(Ⅱ)(PdL2) was obtained by reacting 1-(4-(dimethylamino)benzylidene)-4-phenyl-thiosemicarbazide with dichlorobis(benzonitrile)palladium(Ⅱ) in methanol,and its structure was characterized by single-crystal X-ray diffraction.The crystal of PdL2 was obtained in dimethyl-formamide(DMF) solvent with solvent molecules involved in the cell and crystallizes in the monoclinic system,space group C2 with a = 18.485(15),b = 7.090(5),c = 17.595(11) ,β = 121.21(3)o,V = 1972(2) 3,Z = 2,Mr = 847.40,Dc = 1.427 g/cm3,μ = 0.624 mm-1,F(000) = 880,R = 0.0607 and wR = 0.1358.The Pd atom adopts a distorted square planar coordination geometry with two Pd-N and two Pd-S bonds.The ligand loses a proton from its tautomeric thiol form and coordinates to the Pd atom via mercapto sulfur and the imine nitrogen atom,which binds to palladium as bidentate N,S-donors forming five-membered chelate rings.The complex formed hydrogen bonding interaction with solvent DMF molecules from the hydrogen of phenylamine to the oxygen of DMF and several intramolecular hydrogen bonds.Pd(Ⅱ) perturbed ligand π-π* transition and metal-to-ligand charge transfer(MLCT) transition are observed in its electronic absorption spectra.The complex exhibits intraligand 1π-π*(IL) state and MLCT state dual fluorescent emissions in organic solvent at room temperature. The title compound bis (1- (4- (dimethylamino) benzylidene) -4-phenylthiosemicarbazato) -palladium (II) (PdL2) was obtained by reacting 4- with dichlorobis (benzonitrile) palladium (II) in methanol, and its structure was characterized by single-crystal X-ray diffraction. The crystal of PdL2 was obtained in dimethyl- formamide (DMF) solvent with solvent molecules involved in the cell and crystallizes in the monoclinic system with space group C2 with a = 18.485 (15), b = 7.090 (5), c = 17.595 (11) β, β = 121.21 (3) o, V = 1972 , D = 1.427 g / cm3, μ = 0.624 mm-1, F (000) = 880, R = 0.0607 and wR = 0.1358.The Pd atom adopts a distorted square planar coordination geometry with two Pd-N and two Pd-S bonds. The ligand loses a proton from its tautomeric thiol form and coordinates to the Pd atom via mercapto sulfur and the imine nitrogen atom, which binds to palladium as bidentate N, S-donors forming five-membered chelate rings. complex for med hydrogen bonding interaction with solvent DMF molecules from the hydrogen of phenylamine to the oxygen of DMF and several intramolecular hydrogen bonds. Pd (Ⅱ) perturbed ligand π-π * transition and metal-to-ligand charge transfer (MLCT) transition are observed in its electronic absorption spectra. The complex exhibits intraligand 1π-π * (IL) state and MLCT state dual dual fluorescent emissions in organic solvent at room temperature.