Photochemical synthesis, structure and spectroscopic properties of [W(CO) 4 (C 5 H 10 N) 2 CH 2 ]

Dipiperidylmethane (CH2dipip) coordinates to photochemically created W(CO)4 species to give a tungsten(0) complex [W(CO)4(CH2dipip)]. The structure of the new bidentate amine complex of tungsten(0) was established by spectroscopic methods (NMR, IR, UVVis) in solution and by single-crystal X-ray diffraction studies. A preliminary experiment indicates that the tungsten complex emits light at λmax.556nm, when it is excited by λmax.523nm in the solid state at room temperature.