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This contribution reports the thermally induced spin crossover (SCO) in the titled series of hybrid solids from magnetic (SQUID), DSC, IR, Raman, and Mössbauer data. The onset temperature for the...

Gold cyanide, AuCN, despite its simple formula unit, has surprising structural features not completely understood to date. The present contribution discusses the results of a structural study on the nature of defects found in 1D AuCN when submitted to mechanical grinding. This is an appropriate treatment to induce structural defects in that solid, which were identified for the first time by combining XRD, XPS, Raman, and UV-vis techniques. Furthermore, it is striking that the CNÀ AuÀ CN and CNÀ AuÀ NC sequences get disordered upon grinding while the NCÀ AuÀ CN gets ordered. Additionally, it is shown that the atomic chains apart from getting unraveled during the grinding process, are preferentially disrupted at the AuÀ N bond. The induced defects have a large impact on the UV-vis absorption spectrum of AuCN.

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