Dinuclear gold(III) pyrazolato complexes – Synthesis, structural characterization and transformation to their trinuclear gold(I) and gold(I/III) analogues

The reaction of AuCl3py with Na(pz∗) (pz∗ = pyrazolato, or substituted pyrazolato anion) yields stable dinuclear [cis-AuIIICl2(μ-pz∗)]2 complexes. In the presence of a base, the latter undergo reduction with concomitant transformation of the dinuclear Au2III-structure to trinuclear Au2IIIAuI, AuIIIAu2I (containing trans AuIIICl2-centres) and Au3I species.

Graphical abstractThe reaction of AuCl3py with Na(pz∗) (pz∗ = pyrazolato, or substituted pyrazolato anion) yields stable dinuclear [cis-AuIIICl2(μ-pz∗)]2 complexes. In the presence of a base, the latter undergo reduction with concomitant transformation of the dinuclear Au2III-structure to trinuclear Au2IIIAuI, AuIIIAu2I (containing trans AuIIICl2-centres) and Au3I species.Figure optionsDownload full-size imageDownload as PowerPoint slide