Dynamic behavior and aggregation of propyllithium from carbon-13 and lithium-6 NMR at high field

G Fraenkel, M Henrichs, JM Hewitt, BM Su…

Index: Fraenkel,G.; Henrichs,M.; Hewitt,J.M. Journal of the American Chemical Society, 1980 , vol. 102, p. 3345

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Citation Number: 120

Abstract

Abstract: High-field I3C NMR of propyllithium-l-13C-I-6Li (4) at equilibrium in cyclopentane shows splitting due to I3C-6Li spin coupling, and reveals the existence of several organolithium species with aggregation numbers of 6, 8, and 9 whose distribution varies with temperature and which all undergo fast intraaggregate carbon-lithium bond exchange. Equilibrium constants and thermodynamic data connecting the aggregates are given. ...