SYNTHESIS OF ENERGETIC OXIDIZERS.
Abstract
Synthesis of NF4(+) salts has been carried out by two general methods. Direct synthesis reactions of NF3, F2, and a series of Lewis acids at high pressures and moderately elevated temperatures have been used to produce a series of NF(+) salts having fully fluorinated anions. Metathesis reactions in liquid HF have been used to produce a number of new NF4(+) salts including some with oxygen-containing anions. The rate of reaction to form NF4(+) salts in direct synthesis depends on the acidity of the Lewis acid. Thus, SbF5 forms NF4SbF6 in good yield, AsF5 produces the arsenate in moderate yield, PF5 forms NF4PF6 in very low yield, and BF3 produces only a trace of NF4BF4, if any. It was concluded that compounds less acidic than PF5 in HF would be unlikely to form NF4(+) salts by direct synthesis. This was confirmed when ClF3 and ClF5 did not yield the corresponding salts, NF4ClF4, or NF4ClF6, on heating NF3, F2, ClF3, and ClF5 at high pressure for extended periods of time. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 25, 1968
- Accession Number
- AD0388595
Entities
People
- G. R. Zeilenga
- J. A. Neff
- M. P. Dolder
- R. T. Rewick
- W. E. Tolberg
Organizations
- SRI International