Gas phase synthesis and reactivity of Agn+ and Agn−1H+ cluster cations
作者： George N. Khairallah , Richard A. J. O'Hair
DOI: 10.1039/B505645B
关键词: Inorganic chemistry 、 Qualitative inorganic analysis 、 Hydride 、 Crystallography 、 Chemistry 、 Heteroatom 、 Molecule 、 Ligand 、 Cluster (physics) 、 Collision-induced dissociation 、 Silver cyanide
摘要: Multi-stage mass spectrometry (MSn) on [(M + Ag − H)x + Ag]+ precursor ions (where M = an amino acid such as glycine or N,N-dimethylglycine) results in the formation of stable silver (Ag3+, Ag5+ and Ag7+) hydride (Ag2H+, Ag4H+ Ag6H+) cluster cations gas phase. Deuterium labelling studies reveal that source can be either from α carbon one heteroatoms. When glycine, cyanide clusters Ag4CN+ Ag5(H,C,N)+ are also observed. Collision induced dissociation (CID) DFT calculations were carried out each these to shed some light their possible structures. CID Agn+ Agn−1H+ generally same Agn−2+ product via loss Ag2 AgH respectively. have similar structural features only slightly less than all counterparts. In addition, react with 2-propanol 2-butylamine pathways, multiple ligand addition occurring a coupled deamination-dehydration reaction upon condensation third (for Ag2H+) fourth other clusters) molecule onto clusters. Taken together, suggest structurally related replacement atom hydrogen atom. This does not dramatically alter stability its unimolecular bimolecular chemistry reagents.
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