Nitrosylfluorid

synthetischeNitrosyl fluoride may be prepared by the reaction of fluorine with nitric oxide: F2 + 2NO → 2FNO Nitrosyl fluoride also can be obtained by heating nitrosyl fluborate, NOBF4, and sodium fluoride: NOBF4 + NaF → NaBF4 + FNO Nitrosyl fluoborate required for the above preparation may be obtained by dissolving boric acid in 40% HF, concentrating the solution till it fumes, and purifying the NOBF4 formed by sublimation in a vacuum. Nitrosyl fluoride also can be produced by the action of nitrosyl chloride with silver fluoride: NOCl + AgF → FNO + AgCl All preparations must be done in complete absence of water.