Editing Caesium fluoride (section)

==Synthesis and properties==
[[File:CsF@DWNT.png|thumb|left|150px|Crystalline CsF chains grown inside double-wall [[carbon nanotube]]s.<ref name=chains>{{cite journal|doi=10.1038/ncomms8943|pmid=26228378|pmc=4532884|title=Single-atom electron energy loss spectroscopy of light elements|journal=Nature Communications|volume=6|pages=7943|year=2015|last1=Senga|first1=Ryosuke|last2=Suenaga|first2=Kazu|bibcode=2015NatCo...6.7943S}} (Supplementary information)</ref>]]
Caesium fluoride can be prepared by the reaction of [[caesium hydroxide]] (CsOH) with [[hydrofluoric acid]] (HF) and the resulting salt can then be purified by recrystallization. The reaction is shown below:

:CsOH + HF → CsF + H<sub>2</sub>O

Using the same reaction, another way to create caesium fluoride is to treat [[caesium carbonate]] (Cs<sub>2</sub>CO<sub>3</sub>) with hydrofluoric acid and again, the resulting salt can then be purified by recrystallization. The reaction is shown below:
:Cs<sub>2</sub>CO<sub>3</sub> + 2 HF → 2 CsF + H<sub>2</sub>O + CO<sub>2</sub>

CsF is more soluble than [[sodium fluoride]] or [[potassium fluoride]] in organic solvents. It is available in its anhydrous form, and if water has been absorbed, it is easy to dry by heating at 100&nbsp;°C for two hours ''[[in vacuo]]''.<ref name="Friestad">{{cite book|author1=Friestad, G. K. |author2=Branchaud, B. P. |title=Handbook of Reagents for Organic Synthesis: Acidic and Basic Reagents|editor1=Reich, H. J. |editor2=Rigby, J. H. |publisher=Wiley|location=New York|year=1999|pages=99–103|isbn=978-0-471-97925-8}}</ref> CsF reaches a [[vapor pressure]] of 1 [[kilopascal]] at 825&nbsp;°C, 10 kPa at 999&nbsp;°C, and 100 kPa at 1249&nbsp;°C.<ref>{{cite book | editor = Lide, D. R. | title = CRC Handbook of Chemistry and Physics | edition = 86th | location = Boca Raton (FL) | publisher = CRC Press | year = 2005 | isbn = 0-8493-0486-5 |page=6.63|chapter=Vapor Pressure|chapter-url=http://www.physics.nyu.edu/kentlab/How_to/ChemicalInfo/VaporPressure/morepressure.pdf}}</ref>