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DOI: 10.1039/A802537A (Paper) Reference Section for: Chem. Commun., 1998, 1479-1480

Oxonium-ion crown ether complexes from aqua regia

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Karin Johnson and Jonathan W. Steed

Abstract

Reaction of an aqua regia solution of gold metal with 15-crown-5 and its derivatives results in the formation of the hydrogen bonded aggregates [H7O3][AuCl4]·15-crown-5 1 and [H5O2][AuCl4]·(benzo-15-crown-5)2 2; complex 1 exhibits a complex, cross-linked structure in which the H7O3+ unit hydrogen bonds to two adjacent crown ethers and a chloride ligand of the anion; the AuIII centre also engages in long-range interactions wtih the crown oxygen atoms.

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