133778-33-3Relevant academic research and scientific papers
Reaction of carbon monoxide in the superacid HSO3F-Au(SO3F)3 and the gold(I) bis(carbonyl) cation [Au(CO)2]+. Isolation and characterization of gold(I) carbonyl fluorosulfate, Au(CO)SO3F
Willner, Helge,Aubke
, p. 2195 - 2200 (2008/10/08)
Solutions of gold tris(fluorosulfate), Au(SO3F)3, in fluorosulfuric acid, HSO3F, behave as superacids and will dissolve up to ～3.5 mol of CO/mol of Au(SO3F)3. During the CO uptake, Au(III) is reduced to Au(I), with Au+(solv) stabilized by CO to give the cation [(OC)Au(CO)]+(solv). The linear five-atom cation is characterized by its vibrational spectrum with CO stretching frequencies observed at 2251 (Raman) and 2211 (IR) cm-1. The cation is stable in solution, but solvent removal in vacuo leads to the formation of a new gold(I) monocarbonyl derivative, Au(CO)SO3F, in quantitative yield as a white solid. Au(CO)SO3F is thermally stable up to 190°C. The CO stretch is found at 2198 and 2195 cm-1 in the Raman and IR spectra, respectively, well above the value of free CO.
