The decomposition of NF4AsF6

✍ Scribed by Irvine J. Solomon; James N. Keith; Alan Snelson

• Publisher: Elsevier Science
• Year: 1972
• Tongue: English
• Weight: 371 KB
• Volume: 2
• Category: Article
• ISSN: 0022-1139
• DOI: 10.1016/s0022-1139(00)83497-1

✦ Synopsis

NFdAsFe decomposes smoothly at 175" and above, to the starting materials NF,, F2 and AsFs. The decomposition has been followed by total pressure measurements and found to obey the equation

P312 = At + B

This has been interpreted in terms of an equilibrium dissociation step NF4AsF6 + NF, + AsFs followed by irreversible decomposition of the unstable NF, NF, --f NF, + F2

The latter step is taken to be a 3/2-order reaction: dP = kiP,,P,% dt

where Pn is the partial pressure of NFs and Pa that of AsFs. Taking the equilibrium into account, the above equation is integrated to yield

P212 -(Pz)3'2 = 3klK,,t/2

An attempt to identify NF, in the products by matrix isolation methods yielded, besides the expected NF, and AsF,, an unknown minor product which appeared not to contain nitrogen.