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Basische Metalle. II. Protonierungs‐ und Alkylierungsreaktionen von π‐Cyclopentadienyl‐metall‐bis(tert.‐phosphit)‐Komplexen
Author(s) -
Werner Helmut,
Neukomm Heinrich,
Kläui Wolfgang
Publication year - 1977
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19770600203
Subject(s) - chemistry , cyclopentadienyl complex , protonation , metal , electrophile , alkylation , medicinal chemistry , stereochemistry , metallocene , ion , catalysis , organic chemistry , polymer , polymerization
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.