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THE GENERATION OF UNUSUAL NOBLE-METAL CATIONS IN FLUORO ACIDS AND SUPER ACIDS, AND THEIR SPECTROSCOPIC PROPERTIES

TitleTHE GENERATION OF UNUSUAL NOBLE-METAL CATIONS IN FLUORO ACIDS AND SUPER ACIDS, AND THEIR SPECTROSCOPIC PROPERTIES
Publication TypeJournal Article
Year of Publication1995
AuthorsAubke, F
JournalJournal of Fluorine Chemistry
Volume72
Pagination195-201
Date PublishedJun
Type of ArticleProceedings Paper
ISBN Number0022-1139
KeywordsCARBONYL, FLUORO ACIDS, FLUOROSULFATE DERIVATIVES, GOLD, IONS, IR spectroscopy, MOLECULAR-STRUCTURE, NMR, NOBLE-METAL CATIONS, PALLADIUM(II), SILVER(II), SPECTROSCOPY, SUPER ACIDS, UNDECAFLUORODIANTIMONATE(V), X-RAY CRYSTAL STRUCTURES
Abstract

{Two types of highly electrophilic cations, ’bare’ M(2+) or carbonyl cations, formed by the noble metals palladium and platinum (Group 10) and silver and gold (Group 11) in low oxidation states (+1 or +2) are generated in highly acidic media. The acidic media consists of: the Bronsted superacid HSO3F; the Lewis superacid SbF5; and the conjugate superacid HSO3F-SbF5. Derived from these superacids are the very weakly nucleophilic anions SO3F- or Sb2F11- as counterions to stabilize the cations in solids. Finally, stabilization of the highly electrophilic cations by coordination to CO leads to isolable complexes, unprecedented in transition-metal chemistry in their structural, spectroscopic and bonding characteristics. The cations discussed include, in addition to ’bare’ M(2+) (M=Ag or Au): linear [M(CO)(n)](+)

URL<Go to ISI>://A1995RD58200007