Kinetics of reaction of alkynes with some cobalt carbonyls |
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Authors: | A.J. Poë |
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Affiliation: | Erindale College and the Department of Chemistry, University of Toronto, Toronto Canada |
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Abstract: | Pt(CO)2Cl2 reacts in benzene, toluene or tetrahydrofuran with 3-hexyne to give carbonylplatinumbis[di-μ-chloro,chloro(tetraethylcyclobutadiene)platinum](I), bis[dichloro(tetraethylcyclopentadienone)platinum] (III), dichloro-(tetraethyl-p-benzoquinone)platinum (IV) and dichloro(tetraethylcyclobutadiene)platinum (II). This last compound is also obtained by treating I with 1 to 3 moles of triphenylphosphine or p-toluidine. p ]The structure and reactions of III are discussed; the anion exchange reaction gives the iodo-analogue, while treatment with donor ligands gives adducts of formula [(C2H5)4C4CO]PtCl2L(L = triphenylphosphine, p-toluidine, benzylamine and pyridine) and [(C2H5)4C4CO]PtCl2L2(L = benzylamine, 3-methylpyridine). p ]2-Butyne reacts with dichlorodicarbonylplatinum to give the methyl analogous of compounds I–III. |
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