CHED 498 |
| A single chemical system capable of illustrating metal-alkyl isomerization via Β-hydride abstraction and reinsertion, olefin elimination to yield a metal hydride, and CO insertion into a metal-alkyl bond will be presented. These compounds of the type M(S2CNEt2)(PEt3)(R), [M = Pd, Pt; R = H (Pt only), methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl (Pt only)] are easily synthesized by reaction of the corresponding alkyl-lithium reagent with M(S2CNEt2)(PEt3) (Cl). The NMR spectra of the compounds are especially interesting as the compounds contain up to 4 spin 1/2 nuclei (1H, 13C, 31P, and 195Pt) and demonstrate chemical shift values below zero in the 1H and 13C spectra. This set of experiments has been successfully completed by our upper division students with positive feedback. |
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General Papers
8:00 AM-11:45 AM, Thursday, 14 September 2006 San Francisco Marriott -- Salon 10, Oral
Division of Chemical Education |