pentamethylcyclopentadienyl(tris(acetonitrile))ruthenium
tetrakis(trifluoromethyl)triethylsilyloxycyclopentadienide
Burk, M. J.; Arduengo, A. J., III; Calabrese, J. C.; Harlow, R. L. J. Am. Chem. Soc., 1989, 111, 8938.

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