The preparation and isolation of the complexes [Et4N][AuX2] and [Bun4N][AuX2], where X = Cl, Br, or I, are described. The i.r. and Raman spectra of the salts have been interpreted in terms of linear anions in each case. The fundamental frequencies of each anion are compared with those of the structurally similar HgX2 molecules, and appropriate force constants are given.
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Braunstein et al. (1973) studied this question.