Synthesis and crystal structure of a heterobinuclear complex [(PhPPy2)2PdCuCl2]ClO4 (PhPPy2=bis(2-pyridyl)phenylphosphine)

The mononuclear palladium(II) complex trans-PdCl₂(PhPPy₂)₂] (1) reacts with Cu(CH₃CN)₄]ClO₄ to afford the heterobinuclear (PhPPy₂)₂PdCuCl₂]ClO₄·2CH₃CN (2), bridged by two PhPPy₂ ligands in a new mode. Complex 2 crystallizes in space group P2₁/c with a?=?12.947(1), b?=?9.142(1), c?=?33.454(2)?Å, β?=?99.698(1)°. The copper(I) and palladium(II) ions in 2 adopt distorted tetrahedral and square-planar geometry, respectively. At room temperature, the complex is photoluminescent in solution.