title: Spectroscopic observation of photo-induced metastable linkage isomers of coinage metal (Cu, Ag, Au) sulfur dioxide complexes.
abstract: Coinage metal atom (Cu, Ag, Au) reactions with SO2 were investigated by matrix isolation infrared absorption spectroscopy and density functional theory electronic structure calculations. Both mononuclear complexes M(η(1)-SO2) (M = Ag, Au) and M(η(2)-O2S) (M = Ag, Cu) were observed during condensation in solid argon or neon. Interestingly, the silver containing mononuclear complexes are interconvertible; that is, visible light induces the isomerization of Ag(η(1)-SO2) to Ag(η(2)-O2S) and vice versa on annealing. However, there is no evidence of similar interconvertibility for the Cu(η(2)-O2S) and Au(η(1)-SO2) molecules. These different behaviors are discussed within the bonding considerations for all of the obtained products.
authors.affiliation: Department of Chemistry, Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, Shanghai, 200092, China. xfwang@tongji.edu.cn.
authors.forename: Xing
authors.initials: X
authors.lastname: Liu
authors.forename: Xuefeng
authors.initials: X
authors.lastname: Wang
authors.forename: Bing
authors.initials: B
authors.lastname: Xu
authors.forename: Lester
authors.initials: L
authors.lastname: Andrews