Triazole complexes mercury

Amino-3-methyl-5-thione-l,2,4-triazole with [HgR(MeCOO)] (R = Me, Ph) gives complexes 186, where coordination occurs via the sulfur and amino nitrogen atoms (93JOM(450)41). In the crystalline state, intermolecular interaction of the mercury site with the endocyclic nitrogen atom of the neighboring unit is also observed. 

The crystallography of 8-azaadenine complexed with zinc and mer-cury and of 8-azahypoxanthine with cadmium and mercury showed that the first two metals complexed with N-3 whereas the cadmium was bound to N-7. Cupric ions opened the nucleus of 8-azaadenine to give a triazole. ... 

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