In comparison with Fe2(μ-S)2(CO)62-, Roussin's nitrosyl anion is considerably more stable and is reactive toward a narrower range of electrophiles. These observations are consistent with the view that nitric oxide is a more effective π-acid ligand than carbon monoxide. The net result is that the nucleophilicity of metal nitrosyl complexes is attenuated relative to the analogous carbonyls. An additional finding of this study relates to the synthetic utility of Fe2(μ-I)2(NO)4. This diiron reagent allows one to prepare anhydrous solutions of Fe2(μ-E)2(NO)42- (E = S, Se, Te). These intermediates permit the assembly of organochalcogenide ligands in situ, thus obviating the need for noxious and unstable ligand precursors.
|Original language||English (US)|
|Number of pages||4|
|State||Published - 1982|
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry