An Experimental Search for Gaseous Reactivity Between AlF and HF Near 1200 K.

J Res Natl Bur Stand A Phys Chem

Institute for Materials Research, National Bureau of Standards, Washington, D.C. 20234.

Published: January 1973

Using an accurate transpiration method, AlF was sublimed near 1200 K into argon containing 0, 0.02, and 0.76 atm of HF, but no reaction between AlF and the HF was detected within the precision (about 1%). Two alternative structures of HAlF are postulated. An upper bound for extent of reaction corresponds to > - 33 kcal (- 138 kJ) for AlF (g) + HF (g) = HAlF (g); this indicates a far lower stability of HAlF (g) than that of LiAlF (g) or NaAlF (g) when formed similarly.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6715977PMC
http://dx.doi.org/10.6028/jres.077A.021DOI Listing

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