Issue 8, 1975

Transition-metal nitrosyl compounds. Part X. A study of olefin rotation in [Os(CO)NO(C2H4)(PPh3)2][PF6]

Abstract

The reaction of [Os(CO)NO(PPh3)2Cl] first with silver hexafluorophosphate and then ethylene leads to formation of the PF6 salt of the cation [Os(CO)NO(C2H4)(PPh3)2]+. This cation is thought to possess a trigonal bipyramidal geometry in which the CO, NO, and C2H4 ligands occupy equatorial positions. Under ambient conditions the ethylene rotates and variable temperature 13C n.m.r. data provide direct experimental evidence that this type of rotation occurs via the metal–olefine bond. The value of ΔGTcwas determined as 9.5 ± 0.2 kcal mol–1.

Article information

Article type
Paper

J. Chem. Soc., Dalton Trans., 1975, 677-681

Transition-metal nitrosyl compounds. Part X. A study of olefin rotation in [Os(CO)NO(C2H4)(PPh3)2][PF6]

J. A. Segal and B. F. G. Johnson, J. Chem. Soc., Dalton Trans., 1975, 677 DOI: 10.1039/DT9750000677

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