Synthesis and reactivity of hydrogen-rich uranium–rhenium compounds; an unsuspected detrimental effect of alkali-metal halide on chemical metathesis
- 1 January 1996
- journal article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 8,p. 1487-1491
- https://doi.org/10.1039/dt9960001487
Abstract
Reaction of [U(η-C5Me5)2Cl(thf)] and [K(thf)2][ReH6(PPh3)2] did not afford the metathesis product with elimination of KCl but gave the anionic addition compound [K(thf)2][Cl(η-C5Me5)2 UH6Re(PPh3)2](thf = tetrahydrofuran); the borohydride analogue was similarly prepared. The bimetallic complexes [(η-C5H4R)3UH6Re(PPh3)2](R = But or SiMe3) could not be isolated from [U(η-C5H4R)3Cl] and [K(thf)2][ReH6(PPh3)2] because of their reverse cleavage by KCl which led to an equilibrium mixture; these hexahydrides were cleanly synthesized by reaction of [U(η-C5H4R)3][BPh4] and [K(thf)2][ReH6(PPh3)2].Keywords
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