Abstract
The photochemical syntheses using ultraviolet (UV)-irradiated elemental fluorine at ambient temperature in anhydrous HF (aHF) offer a milder approach to the preparation of various fluorides with transition and main group elements in the highest oxidation states [i.e., Ni(IV), Ag(III), Mn(IV), Cr(V), Au(V)]. Photochemical approach is also convenient for the syntheses of various O2+, [XeF5]+, [Xe2F11]+, and other salts. All reactions are carried out in reaction vessels made of fluorinated polymers, which are very resistant and inert materials, therefore there is no danger of final product contamination by by-products formed between reagents and reaction vessel material. This possibility should be taken into account when metal reaction vessels and very high temperatures are involved. In this contribution, the requirements of this technique together with examples of photochemically prepared fluorides are given. For comparison, some reactions showing how far oxidation with elemental fluorine at ambient temperature in neutral or basic aHF as a solvent will go without using UV source, are also included.
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