The di(η~5-cyclopentadienyl)lutetium chloride was first prepared by Dubeck et al.in 1963.However,to our knowledge no report on its structrual information has beengiven up to date.The crystal structure of its four analogies which exist as chlorine-bri- The di (η ~ 5-cyclopentadienyl) lutetium chloride was first prepared by Dubeck et al. In 1963. Even, to our knowledge no report on its structrual information has been promoted to the. The crystal structure of its four analogies which exist as chlorine -bri-