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Electron Solvation and the Unique Liquid Structure of a Mixed-Amine Expanded Metal: The Saturated Li-NH3 -MeNH2 System.

ABSTRACT: Metal-amine solutions provide a unique arena in which to study electrons in solution, and to tune the electron density from the extremes of electrolytic through to true metallic behavior. The existence and structure of a new class of concentrated metal-amine liquid, Li-NH3 -MeNH2 , is presented in which the mixed solvent produces a novel type of electron solvation and delocalization that is fundamentally different from either of the constituent systems. NMR, ESR, and neutron diffraction allow the environment of the solvated electron and liquid structure to be precisely interrogated. Unexpectedly it was found that the solution is truly homogeneous and metallic. Equally surprising was the observation of strong longer-range order in this mixed solvent system. This is despite the heterogeneity of the cation solvation, and it is concluded that the solvated electron itself acts as a structural template. This is a quite remarkable observation, given that the liquid is metallic.

SUBMITTER: Seel AG 

PROVIDER: S-EPMC5396365 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature

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Electron Solvation and the Unique Liquid Structure of a Mixed-Amine Expanded Metal: The Saturated Li-NH<sub>3</sub> -MeNH<sub>2</sub> System.

Seel Andrew G AG   Swan Helen H   Bowron Daniel T DT   Wasse Jonathan C JC   Weller Thomas T   Edwards Peter P PP   Howard Christopher A CA   Skipper Neal T NT  

Angewandte Chemie (International ed. in English) 20170110 6

Metal-amine solutions provide a unique arena in which to study electrons in solution, and to tune the electron density from the extremes of electrolytic through to true metallic behavior. The existence and structure of a new class of concentrated metal-amine liquid, Li-NH<sub>3</sub> -MeNH<sub>2</sub> , is presented in which the mixed solvent produces a novel type of electron solvation and delocalization that is fundamentally different from either of the constituent systems. NMR, ESR, and neutro  ...[more]

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