79056-35-2Relevant academic research and scientific papers
Perfluoroammonium and cesium fluorotungstates
Wilson, William W.,Christe, Karl O.
, p. 4139 - 4143 (1981)
The syntheses of NF4+ salts containing fluorotungstate anions were studied. The new NF4WOF5 salt was prepared by the reaction of WOF4 with a concentrated solution of NF4HF2 in anhydrous HF. It is a white solid, stable up to 60°C. At higher temperatures it decomposes to NF4W2O2F9, NF3, OF2, and WF6. The ionic nature of NF4WOF5 in the solid state was established by vibrational spectroscopy, but in dilute HF solutions the WOF5- anion solvolyzes according to 2WOF5- + HF ? W2O2F9- + HF2-. In HF solution WF6- is readily oxidized by NF4+ to yield WF6 and NF3. The syntheses and some reaction chemistry and properties of CsWOF5, CsW2O2F9, Cs2WO2F4, and CsWF6 are discussed.
