Evidence for a 1,2-shift mechanism of the 1–5-η-cycloheptatrienyl moiety with respect to the central iron atom of the title compound is presented together with absolute assignments of the 13C n.m.r. chemical shifts of the C7H7 ring. A low-temperature rocking motion of both rings can be frozen out at –70 °C.
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Journal of the Chemical Society, Dalton Transactions
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