Chemical formation of neutral complexes from charged metal clusters: reactions of pre-formed aluminum cluster anions with methyl iodide

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摘要：

Aluminum cluster anions were reacted with methyl iodide vapor in a fast-flow tube apparatus, yielding primarily I and clusters of the type Al nI . Based on thermodynamic considerations, the presence of I is taken to indicate a neutralization reaction pathway whereby clusters of the type Al nCH 3 are formed. Comparison of relative reaction rates to previously measured electron affinities suggests that the Al n–CH 3 interaction is covalent, rather than ionic, in nature. It is suggested that the neutral cluster complexes reported here may hold potential as high energy fuel dopants.

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关键词：

Experimental/ aluminium electron affinity metal clusters molecule-molecule reactions organic compounds reaction rate constants/ chemical formation neutral complexes charged metal clusters reactions pre-formed Al cluster anions methyl iodide fast-flow tube apparatus thermodynamic considerations neutralization reaction pathway relative reaction rates electron affinities high energy fuel dopants/ A8230E Molecule-molecule reactions A3640J Interactions of clusters (collisions and reactions) A8220P Measurements of chemical rate constants, reaction cross sections, and activation energies A3520V Molecular ionization potentials, electron affinities, molecular core binding energy