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The recently reported homologous low-valent indium and gallium salts M+[Al(ORF)4]− (M = Ga, In; RF = C(CF3)3) were used to extend the coordination chemistry of GaI and InI to the isolated crown-6 complexes [M(crown-6)(PhF)2]+[Al(ORF)4]− in fluorobenzene solution (PhF = C6H5F). In contrast to known ion-paired compounds for M = In, our complexes are undisturbed and in the solid state free of contacts to the anion. A peculiar combination of very weak η1- and η6-coordination to the PhF-solvent was observed that allows speculation about the presence of a stereochemically active lone pair at MI. Structure and energetics of these novel salts were rationalized on the basis of DFT calculations.
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