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Properties of substance:
chlorine(I) fluoride
Group of substances:
inorganic
Physical appearance:
colorless gas
Empirical formula (Hill's system for organic substances):
ClF
Structural formula as text:
ClF
Molar/atomic mass: 54.45
Melting point (°C):
-155.5
Boiling point (°C):
-100.1
Solubility (g/100 g of solvent):
water
: reaction [
Ref.
]
Numerical data:
Year of discovery: 1928
Density:
1.67 (-108°C, g/cm
3
)
Reactions of synthesis:
Yeild 90%. [
Ref.1
,
Ref.2
]
Cl
2
+ F
2
→ 2ClF
Yeild 18,5%. [
Ref.1
]
Cl
2
+ AgF → ClF + AgCl
Yeild 71%. [
Ref.1
,
Ref.2
]
ClOSO
2
F + CsF → ClF + CsOSO
2
F
Yeild 95%. [
Ref.1
]
ClF
3
+ Cl
2
→ 3ClF
Reactions:
Yeild 85-95%. [
Ref.1
]
ClF + HNO
3
→ ClNO
3
+ HF
Yeild 99%. [
Ref.1
]
SO
2
+ ClF → SO
2
ClF
Yeild 95%. [
Ref.1
]
CF
3
OOH + ClF → CF
3
OOCl + HF
[
Ref.1
]
CF
3
COONa + ClF → CF
3
COOCl + NaF
[
Ref.1
]
S + 4ClF → SF
4
+ 2Cl
2
[
Ref.1
]
N
2
F[AsF
6
] + ClF → ClF
2
[AsF
6
] + N
2
[
Ref.1
]
COF
2
+ ClF → CF
3
OCl
Vapour pressure (Torr):
1 (-153.5°C)
10 (-139.3°C)
100 (-121.2°C)
Dipole moment (D):
0.65 (20°C)
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-49.9 (g)
Standard molar Gibbs energy of formation Δ
f
G
0
(298.15 K, kJ/mol):
-51.4 (g)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
217.8 (g)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
32.09 (g)
Enthalpy (heat) of vaporization Δ
vap
H (kJ/mol):
22
References:
Никитин И.В. Фториды и оксифториды галогенов. - М.: Наука, 1989. - pp. 5-16 [Russian]
Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 109-110 [Russian]
Рысс И.Г. Химия фтора и его неорганических соединений. - М., 1956. - pp. 126-127 [Russian]
Фиалков Я.А. Межгалоидные соединения. - Киев: Издательство АН Украинской ССР, 1958. - pp. 20-29 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru
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