The reaction between carbon monoxide and phthalocyaninatoiron(ll) in dimethyl sulphoxide (dmso) has been studied kinetically and from the equilibrium point of view. In the presence of a large excess of CO, the iron complex adds carbon monoxide in a 1: 1 mole ratio via pseudo-first-order kinetics. The observed rate constant has the form kobc = K1[CO] + kr with kt = 1.28 ± 0.05 103 dm3 mol-1s-1 and kt = 0.12 ± 0.02 s-1 at 20 °C. The equilibrium constant K is close to 1 x 104 dm3 mol-1 and is virtually independent of temperature. The effect of temperature on the rate constants has been investigated and the activation parameters determined; their mechanistic implications are discussed.
|Number of pages||4|
|Journal||Journal of the Chemical Society, Dalton Transactions|
|Publication status||Published - 1981|
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