AgF2 Silver fluoride

AgCl Silver chloride, 1 3 AgClOs Silver chlorate, 2 4 AgF Silver(I) fluoride, 4 136 AgF2 Silver (II) fluoride, 3 176 Agl Silver iodide, 2 6 AgO Silver (II) oxide, 4 12 Ag2CN2 Silver cyanamide, 1 98 Ag2P03F Silver monofluorophos-phate, 3 109... 

Black silver(II) fluoride, AgF2 (Ag 4- F2), is a strong fluorinating agent. 

Silver difluoride [7783-95-1], AgF2, is a black crystalline powder. It has been classified as a hard fluorinating agent (3) which Hberates iodine from KI solutions and o2one from dilute aqueous acid solutions on heating. It spontaneously oxidizes xenon gas to Xe(II) in anhydrous hydrogen fluoride solutions (20). 

Silver(II) fluoride AgF2 is a genuine silver(II) compound exhibiting Jahn-Teller tetragonal distortion (4F at 2.07 A 2F at 2.59 A) it exhibits a low... 

Also, in anhydrous conditions, silver reacts with fluorine and forms silver difluoride AgF2 and cobalt gives cobalt(III) fluoride, CoF3, these metals showing higher oxidation states than is usual in their simple salts. 

The successful generation, by precipitation out of liquid anhydrous HF, of fluorides thermodynamically unstable with respect to loss of elemental F2, gave a forceful reminder of the remarkable stability of that solvent towards oxidation. Soon after the preparation of AgFa, in attempts to find evidence for cationic derivatives (e.g. [AgF2] ), it was discovered (see Ref. 98) that even divalent silver, as a cation, Ag + (solvated by HF), had the capability to oxidize Xe. This made chemical sense, since a cation, having an electron deficit, should have higher electronegativity than a related oxidation-state in a neutral or anionic species. Indeed, this had three important consequences. 

Silver (II) fluoride, AgF2, made by the action of fluorine on Ag or AgCl, is fairly stable, the equilibrium pressure of fluorine over the solid at 700° being only 80 mm. It is, nevertheless, a useful fluorinating agent. 

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