Transition-metal nitrosyl compounds. Part XI. The preparation and the study of fluxional behaviour of some cationic acetylene complexes of osmium
- 1 January 1975
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 20,p. 1990-1992
- https://doi.org/10.1039/dt9750001990
Abstract
Cationic nitrosyl acetylene complexes of the type [Os(CO)NO(A)L2][PF6][L = PPh3, A = C2H2, C2HPh, C2Ph2, or C2(CO2Me)2; L = P(C6H11)3, A = C2H2] have been prepared. Their 1H n.m.r. spectra measured and, for the species where A = C2H2, variable-temperature studies are consistent with acetylene rotation about the metal–acetylene bond with ΔGTc ‡= 11.5 ± 0.2 kcal mol–1(L = PPh3) and 14.4 ± 0.5 kcal mol–1[L = P(C6H11)3].Keywords
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