Synthesis, structure and photoluminescence of a novel palladium(I) compound: [Pd3(μ3-Cl)2(dppp)3][Pd2(μ2-Cl)3(PPh3)2](PPh3)2

Pd(PPh3)2Cl2 reacts with PdCl2 and 1,3-bis(diphenylphosphine)propane (dppp) in ethanol–DMF–pyridine mixed solvent to yield a novel palladium(I) compound [Pd3(μ3-Cl)2(dppp)3][Pd2(μ2-Cl)3(PPh3)2](PPh3)2. It features an isolated structure based on [Pd3(μ3-Cl)2(dppp)3]+ cations having triangulo-palladium clusters and [Pd2(μ2-Cl)3(PPh3)2]− anions in which the coordination environment of palladium is an unusual tetrahedral geometry. Its photoluminescence is measured.

Graphical abstractA novel palladium(I) compound, [Pd3(dppp)3(μ3-Cl)2][Pd2(PPh3)2(μ2-Cl)3] · (PPh3)2, has been synthesized and characterized by X-ray single-crystal diffraction. The result reveals that the compound is composed of [Pd3(dppp)3(μ3-Cl)2]+ cations having triangulo-palladium clusters, [Pd2(PPh3)2(μ2-Cl)3]− anions in which the coordination environment of palladium(I) is an unusual tetrahedral geometry, and two uncoordinated PPh3 molecules.Figure optionsDownload full-size imageDownload as PowerPoint slide