Molecular Gold Wire from Mixed‐Valent Au^I/III Complexes

Abstract

Crystals of mixed-valent Au complexes have been grown from solutions of cyclohexanecarbonitrile and a stoichiometric amount of gold(I) and gold(III) chloride. The purely obtained compound was characterized as bis(cyclohexanecarbonitrile)gold(I) tetrachloridoaurate(III). The crystal packing of the mixed valent Au(I/III) compound demonstrates a columnar arrangement of the gold(I) and gold(III) atoms. The new structure displays the shortest unsupported gold(I)-gold(III) interactions with the sub-van der Waals distance of 324-325 pm, which is assumed as an aurophilic bonding interaction.

Noncovalent interactions in inorganic supramolecular chemistry based in heavy metals. Quantum chemistry point of view

“…The versatility of the coordination modes of the heavy metals has enabled wide structure and topology variations of the complexes. The self‐assembly of molecules with gold atoms involves inter‐ and/or intramolecular interactions that lead to the formation of dimers, oligomers, chains, sheets, clusters, and nanoparticles (see Figure ), allowing the generation of systems of high complexity . In addition to the aforementioned noncovalent interactions, metal−metal and representative‐atom‐metal interactions in the complexes have also been found to be associated with the direct formation of this type of self‐assemblies .…”

Molecular gold strings: aurophilicity, luminescence and structure–property correlations

“…by Heck and co-workers. 156 A reaction of AuCl, AuCl 3 and cyclohexylcarbonitrile (NC-Cy) yielded the complex [Au(NC-Cy) 2 ][AuCl 4 ] (9).…”

Is there a Covalent Au(I)–Au(I) Bond in the trans-(AuX)2 (X = F, Cl, Br, I) Structure? A Post-Hartree–Fock and Density Functional Theory Study

“…Within this broad field, we are interested in the ability of heavy metals, namely, gold, platinum, mercury, and thallium, to form stable self-assembly and inorganic complexes. − In particular, inorganic molecular assemblies based on d 8 , d 10 , and s 2 transition-metal complex systems represent an essential class based on the exotic geometries obtained from various noncovalent interactions. − The versatility of the coordination modes of the heavy metals has enabled vast structure and topology variations of the complexes. The self-assembly of molecules with gold atoms involve inter- and intramolecular interactions that lead to the formation of dimers, oligomers, chains, sheets, clusters, and nanoparticles (see Figure ), allowing the generation of systems of high complexity. − …”