Carbon monoxide exchange

Activation Entropies and Volumes for Carbon monoxide Exchange with cts-[M(CO)2X2r... 

Hill, E.P., Hill, J.R., Power, G.G., Congo, L.D. (1977). Carbon monoxide exchange between the human fetus and mother a mathematical model. Am. J. Physiol. 232 H311-23. 

Stanghellini, P. L., Cetini, G., Gambino, O., and Rossetti, R., Effect of solvents on carbon monoxide exchange reaction of Fe3(CO)9Te2, Inorg. Chim. Acta 3, 651 (1969). 

A long-standing topic of discussion has been the relative reactivities of the cis- and trans-coxbon monoxides in MnX(CO)6. Recently a slightly different system has been studied, carbon monoxide exchange at Cr(phen)(CO)4. Here 0 tracer experiments have revealed a significant difference between rates of exchange of the axial and equatorial CO... 

A Study of the carbon monoxide exchange reactions of [MnCl(CO)3L2] shows a decrease of rate in the order P(CsH5)3 > As(C6Hs)3 > Sb(CjH5)3,... 

Papers have considered the carbon monoxide exchange of metal carbonyls themselves 54) and of metal carbonyl halides (55) as well as of base-substituted complexes. In the series [Ni(CO)4], [Ni(CO)3P(CfiHs)3], Ni(CO)2[P(C5H5)3]2, the rate of CO exchange (SnI) decreases in the ratio 420 70 1 54). This order clearly shows the strengthening effect of phosphine substitution on the remaining metal-carbon bond. The rate of the SnI reaction between P(C6Hs)3 and [Ni(CO)4] is the same as the rate of CO exchange of [Ni(CO)4] 66). 

This conclusion is indicated from the observation of a second-order rate law, a lack of rate retardation with excess L, and a greater rate with the smaller leaving group, P(n-Bu)3. Carbon monoxide exchange in [Mn(CO)3L2] is also associative, as is the reverse of equation (2) by microscopic reversibility. 

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