Unstable intermediates. Part CVI. γ-Irradiation of frozen aqueous solutions of alkali-metal cyanides

Abstract

Exposure of aqueous solutions of alkali-metal cyanides to ⁶⁰Co γ-rays at 77 K yields hydroxyl radicals, (CN)₂^–, H₂CN, and HCN^–. The magnetic parameters of these species are compared with existing data. Under these conditions the radical HCN^– is readily protonated to H₂CN even in strongly alkaline rigid solutions. Some evidence for the formation of the radical HCNO^– was also obtained. If this is correct, then this radical, having A_iso(¹H)= 78 G, is probably structurally similar to H₂CN. Possible mechanisms for the formation of these radicals are outlined.