Publication Details (including relevant citation information):
Organometallic Chemistry (U.S.S.R.) , Vol. 5, No. 2, pp. 419-424 (1992)
The dynamics of allyllithium compds. were studied in a nonpolar medium by 1H NMR using a probe, which is introduced into the aggregates of oligobutadienyllithium. The probe is an Et group, the internal chem. shift of which depends on the electroneg. of substituent bonded by it. Similar temp. changes in the spectra of ethyllithium and mixed assocs. of ethyllithium with perdeuterated oligobutadienyllithium give evidence that the equil. between the covalent form of substituted allyllithium and a contact ion pair does not exist.
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