ORGANOMETALLIC NITROSYL CHEMISTRY .9. (ETA-C5H5)W(NO)(ETA-3-C3H5)I, A CHIRAL ORGANOMETALLIC COMPLEX CONTAINING A VERY ASYMMETRIC ALLYL LIGAND

In the explanation of the remarkable stereoselectivity observed during reactions of CpMo(CO)(NO)(η3-allyl)+ [Cp = η5-C5H5] cations with nucleophiles, it has been suggested that electronic asymmetry of the metal atom in the cation probably distorts the allyl ligand so as to localize the π-electron density between the carbon atoms trans to NO.2 We now wish to report that just such a distortion occurs to a marked degree in the related chiral complex CpW(NO)(η3-C3H5)I, a feature which permits the straightforward assignment of its 1H and 13C NMR spectra. © 1979, American Chemical Society. All rights reserved.