Myochrysin (sodium aurothiomalate hydrate) and auranofin [2,3,4,6-tetra-O-acetyl-1-thio-β-D-glucopyranosato-S)(triethylphospine)gold(I)] are luminescent in the solid state and in ethanol glasses at 77 K (myochrysin: λmax = 600 nm; auranofin: 618 nm). Aqueous myochrysin and auranofin in acetonitrile undergo a photodecomposition. It is assumed that the luminecence originates from a metal-centered ds excited state with partial ligand-to-metal charge transfer (LMCT) character while the photodecomposition is induced by LMCT excitation.
Unpredicted but It Exists: Trigonal Sc2Ru with a Significant Metal–Metal Charge Transfer