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The novel 5-exo-phosphino-η 4 -cyclopentadienyl complexes (η 4 -C 5 H 5 PR 1 R 2 )Fe(CO) 3  (4) (a: R 1 =R 2 =SiMe 3 ; b:R 1 =t-Bu; R 2 =SiMe 3 ) are obtained by the nucleophilic addition of LiPR 1 R 2  to the carbocyclic ligand in [(η 5 -C 5 H 5 )Fe(CO) 3 ]PF 6 . At room temperature 4a, b are converted into (η 5 -C 5 H 5 )(CO) 2 Fe-PR 1 R 2  (5a, b).

zeitschrift für naturforschung b

Synthese und Reaktivität von [5-exo-Phosphino-η 4 -cyclopentadien]- tricarbonyleisenkomplexen / Synthesis and Reactivity of [5-exo-Phosphino-η 4 -cyclopentadiene] Tricarbonyliron Complexes