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Dudeney, N.; Kirchner, O.N.; Green, J.C.; Maitlis, P., Electronic structure and reactivity of pentamethylcyclopentadienyl complexes of cobalt, rhodium, and iridium: He-I and He-II photoelectron spectroscopic investigation, J. Chem. Soc. Dalton Trans., 1984, 1877. [all data]