Synthesis, crystal and molecular structure of a binuclear, double-bridged hexacarbonyl tungsten derivative of 4-pyridyldiphenylphosphane

4-Pyridyldiphenylphosphane is used as a bridging ligand for the first time. The ligand forms a double-bridged bimetallic complex with hexacarbonyl tungsten. Characterization is performed by X-ray analysis and NMR spectroscopy. The crystal structure of the complex shows π-stacking interaction between the pyridyl rings, and structurally the complex is an organometallic analogue of [2.2]-paracyclophanes.