Unprecedented [d9]Cu⋯[d10]Au coinage bonding interactions in {Cu(NH3)4[Au(CN)2]}+[Au(CN)2]− salt

 

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Unprecedented [d9]Cu⋯[d10]Au coinage bonding interactions in {Cu(NH3)4[Au(CN)2]}+[Au(CN)2]− salt.

Priola, Emanuele; Mahmoudi, Ghodrat; Andreo, Jacopo and Frontera, Antonio.
Chem. Commun., 2021,  10.1039/D1CC02709C

“The X-ray structure of the {Cu(NH3)4[Au(CN)2]}+[Au(CN)2]− salt is reported showing an unprecedented [d9]Cu⋯[d10]Au coinage bond. The physical nature of the interaction has been studied using DFT calculations, including the quantum theory of atoms-in-molecules, the noncovalent interaction plot and the natural bond orbital analysis, revealing the nucleophilic role of the [d10]Au metal and the electrophilic role of [d9]Cu metal.”