Synthesis, crystal structure and dynamic behaviour in solution of monocyclooctatetraene uranium alkoxides
- 1 January 1992
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 6,p. 1019-1024
- https://doi.org/10.1039/dt9920001019
Abstract
Treatment of [U(cot)(BH4)2](cot =η-C8H8) with ROH (R = Et, Pri or But) led to successive formation of the alkoxide derivatives [U(cot)(BH4)(OR)]4 and [U(cot)(OR)2]5. Their structure and dynamic behaviour in solution have been studied by NMR spectroscopy; complexes 4 are monomeric in tetrahydrofuran whereas 5 are dimeric in this solvent and monomeric in pyridine. Rapid stereoselective exchange occurs between the terminal propoxide ligands of [{U(cot)(OPri)(µ-OPri)}2] and free PriOH. The crystal structures of [{U(cot)(BH4)(µ-OEt)}2] and [{U(cot)(OPri)(µ-OPri)}2] have been determined.Keywords
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