ChemInform Abstract: Single‐Crystal Luminescence Study of the Layered Compound KAu(CN)₂.

Unwinding Au+···Au+ Bonded Filaments in Ligand-Supported Gold(I) Polymer under Pressure

“…These novel hybrid materials are required for various application involving gas storage and purification, catalysis, and ferroelectric switches. − Noble-metals complexes are particularly intriguing due to their closed-shell metallophilic interactions, strong luminescence, and direct relevance to gold nanoparticles applied in medicine and photochemical sensors technology . Recently, high-pressure studies on metallophilic interactions in noble-metals complexes revealed that the luminescence of Au + ···Au + bonded polymers based on gold­(I) dithiocarbamates linked by oligomeric gold–gold interactions is highly piezo- and pyro-sensitive. − The luminescence shifts were associated with the compressed Au + ···Au + distances and reduced HOMO–LUMO energy gap of neighboring gold­(I) centers.…”

Cyanide-bridged bimetallic multidimensional structures derived from organotin(IV) and dicyanoaurate building blocks: ion exchange, luminescence, and gas sorption properties

“…The separation between the gold atoms in K[Au(CN) 2 ] is 3.64 Å [37,42], which is longer than those found in 1. The emission peak at 390 nm in K[Au(CN) 2 ] has been attributed to this weak aurophilic interaction between the dicyanoaurate units [42].…”

“…The separation between the gold atoms in K[Au(CN) 2 ] is 3.64 Å [37,42], which is longer than those found in 1. The emission peak at 390 nm in K[Au(CN) 2 ] has been attributed to this weak aurophilic interaction between the dicyanoaurate units [42]. An emission peak at 436 nm is observed for [C 5 H 10 NH 2 ][Au(CN) 2 ] and attributed to a short aurophilic interaction (3.10 Å) between the dicyanoaurate units arranged into columns [43].…”

“…Thus, the peak at 442 nm observed for 1 could be tentatively attributed to aurophilic interaction. As in the case of K[Au(CN) 2 ] and Tl[Au(CN) 2 ], the low-energy band at 670 nm in 1 is probably due to luminescence traps caused by imperfections in the microcrystalline sample [10,42]. The emission band at 670 nm (full width at half-maximum is 230 nm) is much broader than the peak at 442 nm (full width at halfmaximum is 100 nm), which gives an indication of longer lifetime of the low-energy band.…”

“…The emission spectra of K[Au(CN) 2 ] consists of two bands at about 390 and 630 nm, when excited with 337 nm [42]. The separation between the gold atoms in K[Au(CN) 2 ] is 3.64 Å [37,42], which is longer than those found in 1.…”