X-ray diffraction patterns of metal aurocyanides

Aurocyanides of the following metal cations have been prepared: Ag, Hg(II), Ga, Fe(III), Tl(I), Bi, Pb, Mn(II), Ni, Zn, Cu(II), Cd, In, and Co(II). Most of the aurocyanides are of the type M[Au(CN)2]x where M is the metal cation and x its valence. However, under some conditions mixed aurocyanides containing K may be formed, such as KCo[Au(CN)2]3. Only Ag and Hg(II) form aurocyanides which are sufficiently insoluble for the potentiometric determination of the aurocyanide anion. The diffraction patterns of the various aurocyanides are reported. 12 refs., 16 tabs