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- W2495702499 abstract "Publisher Summary This chapter focuses on the aromatic compounds of the main group elements. The nature and reactions of the radical anions of aromatic anions has been widely investigated. Their general method of preparation involves electron transfer from an alkali metal to the aromatic hydrocarbon dissolved in an ether solvent, such as tetrahydrofuran or dimethoxy-ethane. The resulting solutions are intensely coloured; the naphthaiide radical anion for instance is very dark green. Variations in the preparation include the use of an alkali metal mirror and the addition of good complexing agents for the metal cation. The constitution of solutions of such radical anion salts is complex and is best described as a rapid equilibrium involving at least three distinct kinds of ion-pairs differing in their respective degrees of solvation: (1) tight or contact ion-pairs, (2) loose or solvent-separated ion-pairs, and (3) free ions. The position of the equilibrium depends on several factors including the solvent, temperature, and the presence of strongly coordinating ligands that promote dissociation. Radical anion salts are extremely reactive, and the reactions of the naphthalides, particularly sodium naphthalide are discussed. The reactivity is dependent upon the ion-pair equilibrium. Reaction of alkali metal naphthalides with alkyl halide is presented in the chapter." @default.
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- W2495702499 date "1975-01-01" @default.
- W2495702499 modified "2023-09-27" @default.
- W2495702499 title "Aromatic Compounds of the Main Group Elements" @default.
- W2495702499 doi "https://doi.org/10.1016/b978-044453346-3.50116-5" @default.
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