The Interaction of Cumulene Systems with Organometallic π-Complexes. IV. Novel π-Allyl Complexes Obtained from the Reactions of Allene with Iron and Cobalt Carbonyls
- 1 March 1966
- journal article
- Published by Oxford University Press (OUP) in Bulletin of the Chemical Society of Japan
- Vol. 39 (3) , 543-547
- https://doi.org/10.1246/bcsj.39.543
Abstract
2,2′-Bi-π-allylene(hexacarbonyl)di-iron, [(OC)3Fe]·(Remark: Graphics omitted.)·[Fe(CO)3], was found to be a product of the reaction of allene with Fe3(CO)12. A study of the NMR spectrum, however, showed that a rapid valence tautomerisation takes place, even at −10°C between the 2,2′-bi-π-allylene structure and the related butadiene-type structure. In the presence of an excess of Co2(CO)8, allene yielded the [(C3H4)Co(CO)3]2 complex. The structure of this complex in which a (Remark: Graphics omitted.) skeleton was bound to two Co(CO)2 groups via π-allyl and acyl groups, was suggested.Keywords
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