Basische Metalle. II. Protonierungs‐ und Alkylierungsreaktionen von π‐Cyclopentadienyl‐metall‐bis(tert.‐phosphit)‐Komplexen

Basic Metals. II. Protonation and Alkylation Reactions of π‐Cyclopentadienyl‐metal‐bis(tert.‐phosphite) Complexes Für «Basische Metalle. I» siehe [1]. The complexes C 5 H 5 Co[P(OR) 3 ] 2 (R = CH 3 , C 2 H 5 ) and C 5 H 5 Rh[P(OR) 3 ] 2 (R = CH 3 , C 2 H 5 , C 6 H 5 , C 6 H 4 ‐ o ‐CH 3 ) react with electrophilic agents E + , e.g. H + and CH 3 + , to give [C 5 H 5 ME(P(OR) 3 ) 2 ] + . Salts of these cation have been isolated with BF 4 − and PF 6 − as the anions. The formation of compounds with direct M‐H and M‐CH 3 bonds points to the pronounced Lewis ‐base properties of the metal atom in the starting complexes. The NMR. data of the cations [C 5 H 5 MH(P(OR) 3 ) 2 ] + and [C 5 H 5 MCH 3 (P(OR) 3 ) 2 ] + will be discussed.