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)(2)Cl-2 reacts with PdCl2 and 1,3-bis(diphenylphosphine)propane (dppp) in ethanol-DMF-pyridine mixed solvent to yield a novel palladium(I) compound [Pd-3(mu(3)-Cl)(2)(dppp)(3)][Pd-2(mu(2)-Cl)(3)(PPh3)(2)](PPh3)(2). It features an isolated structure based on [Pd-3(mu(3)-Cl)(2)(dppp)(3)](+) cations having triangulo-palladium clusters and [Pd-2(mu(2)-Cl)(3)(PPh3)(2)](-) anions in which the coordination environment of palladium is an unusual tetrahedral geometry. Its photoluminescence is measured. (C) 2008 Elsevier B.V. All rights reserved.