The kinetics of the thermal insertion reaction of tin(II) halides with cyclopentadienyliron dicarbonyl dimer
1970 ◽
Vol 48
(21)
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pp. 3300-3303
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The kinetics of the thermal insertion reaction of SnBr2 and SnCl2 with the metal–metal bonded dimer [π-C5H3Fe(CO)2]2 have been studied by following the change in the visible spectrum. The kinetic data are consistent with a two-stage mechanism involving the formation of a carbonyl-bridged intermediate followed by nucleophilic attack by the halides on this intermediate. The formation of the intermediate requires an activation enthalpy of 38.0 ± 1.0 kcal/mole, and an activation entropy of 45.5 + 1.5 cal mole−1 deg−1. The activation energy required to break the Fe—Fe bond is estimated to be about 32 kcal/mole.
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1965 ◽
Vol 38
(1)
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pp. 189-203
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