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Dimethyl- and Bis[(trimethylsilyl)methyl]cuprates Show Aggregates higer than Dimers in Diethyl Ether: Molecular Diffusion Studies by PFG NMR and Aggregation-Reactivity Correlations

Xie, X. ; Auel, C. ; Henze, W. ; Gschwind, R. M.



Abstract

The molecular sizes of higher aggregates of dimethylcuprates (Me2CuLi (1), 1·LiI, and 1·LiCN) and bis[(trimethylsilyl)methyl]cuprates ((Me3SiCH2)2CuLi (2), 2·LiI, and 2·LiCN) in diethyl ether (Et2O) were determined by pulsed field gradient (PFG) NMR diffusion measurements. The obtained diffusion coefficients show molecular sizes larger than those of dimers for all systems. In these higher ...

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