Organometallic Reactions and Catalysis. Chapter 14. Gain or Loss of Ligands. CO dissociation In many cases to add another ligand. Dissociative and associative mechanisms More complicated reactions. Dissociation of phosphine (steric effects) cis -Mo(CO) 4 L 2 + CO Mo(CO) 5 L + L
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(-C5H5)2TaH + H2 (5-C5H5)TaH3
[Co(CO)4]- + RX RCo(CO)4 + X-
RCo(CO)4 + CO R(C=O)Co(CO)4 (acyl complex)
R(C=O)Co(CO)4 +R’OH R(C=O)OR’ + HCo(CO)4
(generates the ester from an alcohol).
In Miessler and Tarr