Infrared Spectra and Density Functional Calculations of the Silver and Gold Thiocarbonyls: MCS, M(CS)2, and M2CS (M = Ag and Au) in Solid Argon

Abstract

Laser-ablated Ag and Au atoms have been reacted with high-frequency discharged CS2 followed by condensation in excess argon at 4 K. Besides the known metal and carbon disulfide reaction products, binary silver and gold thiocarbonyls [MCS, M(CS)2, and M2CS (M = Ag and Au)] were formed via the reactions of ground-state metal atoms or dimers with CS in solid argon. The product absorptions were identified by isotopic substitutions and density functional calculations. This work provides the first vibrational spectroscopic characterization of the binary Ag and Au thiocarbonyl complexes.