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Mutual Catalysis of Neutral and Anionic Cobalt Carbonyls in Their CO Scrambling Reactions
Author(s) -
Fachinetti Giuseppe,
Funaioli Tiziana
Publication year - 1992
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199215961
Subject(s) - chemistry , counterion , scrambling , catalysis , cobalt , alkali metal , metal carbonyl , inorganic chemistry , metal , condensation , photochemistry , redox , ion , organic chemistry , linguistics , philosophy , physics , thermodynamics
Redox‐condensation equilibria , probably with the participation of [Co 3 (CO) 10 ] − as intermediate, and not ion pairing as previously postulated, explain the acceleration of the CO scrambling in [Co(CO) 4 ] − by alkali metal counterions. The studies described here show that neutral carbonyl complexes catalyze the CO scrambling for anionic metal carbonyls and vice versa, and that the catalysis is less effective in the presence of free CO. The latter is in agreement with [Co 3 (CO) 10 ] − as the intermediate. These results are important mainly because neutral and anionic metal carbonyls frequently exist together as a result of side reactions.