Arene–molybdenum chemistry: reactions of di-µ-chloro-bis[(η-allyl)-(η-arene)molybdenum] with cyclic olefins
- 1 January 1976
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 3,p. 213-216
- https://doi.org/10.1039/dt9760000213
Abstract
The violet solutions formed form (AlEtCl2)2 and the compounds [{Mo(η-C3H5)(η-arene)Cl}2](arene = C6H6, C6H5Me, or C6H3Me3-1,3,5) react with norbornadiene (nbd), cyclo-octa-1,3,5,7-tetraene(cot), or cyclohepta-1,3,5-triene (cht), and the corresponding cations [Mo(η-C3H5)(η-arene)(η-olefin)]+ have been is olated from the hydrolysed reaction mixtures. Prolonged reaction with cht yields the cycloheptatrienly sandwich compounds [Mo(η-C7H7)(η-arene)][PF6]. The comound [Mo(η-C3H5)(η-C6H6)(cht)][PF6] undergoes deprotonation on an alumina column to the neutral compound [Mo(η-C3H5)(η-C6H6)(η3-C7H7)]. The violet solution reacts with cyclopentene and hydrolysis of the product in the presence of lithium chloride or alkaline sodium dithionite gives [Mo(η-C5H5)(η-C6H6)Cl] or paramagnetic [Mo(η-C5H5)(η-C6H6)] respectively; with cyclohexene the 17-electron cation [Mo(η-C6H6)2]+ is formed in high yield.Keywords
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