Reactions of rhodium(V) hydrido–silyl complexes with butyl-lithium and with lithium triethylhydridoborate
- 1 January 1987
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 8,p. 1963-1966
- https://doi.org/10.1039/dt9870001963
Abstract
Reaction of [(η5-C5Me5)Rh(H)2(SiR3)2](R, = Me3, Et3, or Me2Ph) with LiBun gave [(η5-C5Me5)-RhH(SiR3)2]–; these species regenerated [(η5-C5Me5)Rh(H)2(SiR3)2] on reaction with methanol. By contrast, [(η5-C5Me5)Rh(H)2(SiEt3)2] reacted with Li[BEt3H] slowly to give [(η5-C5Me5)Rh-(H)2(SiEt3)]–, which, with methanol gave the trihydride, [(µ5-C5Me5)Rh(H)2(SiEt3)]. The anion, [(η5-C5Me5)RhH(SiMe3)2]– also reacted with CO2 to give the labile [(η5-Me5)RhH(SiMe3)-(CO)], which was also made by reaction of [(µ5-C5Me5)Rh(CO)2] with SiMe3H. Syntheses of [(η5-C5Me5)Rh(H)2(SiR3)2](R3= Me3 Me2Ph) are described. The secondary isotope shift of 1H/2H on the 103Rh chemical shift on going from [(η5-C5Me5)Rh(H)3(SiEt3)] to [(η5-C5Me5)Rh(H)2D(SiEt3)] has been determined as –9 p.p.m.Keywords
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