sodium fluoride


Gas phase thermochemistry data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Quantity Value Units Method Reference Comment
Δfgas-69.419kcal/molReviewChase, 1998Data last reviewed in December, 1968
Quantity Value Units Method Reference Comment
gas,1 bar52.005cal/mol*KReviewChase, 1998Data last reviewed in December, 1968

Gas Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 3500. to 6000.
A 8.832601
B 0.256658
C -0.025239
D 0.002151
E -0.066425
F -72.28740
G 62.24589
H -69.42001
ReferenceChase, 1998
Comment Data last reviewed in December, 1968

Condensed phase thermochemistry data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Quantity Value Units Method Reference Comment
Δfliquid-130.54kcal/molReviewChase, 1998Data last reviewed in December, 1968
Quantity Value Units Method Reference Comment
liquid,1 bar17.56cal/mol*KReviewChase, 1998Data last reviewed in December, 1968
Quantity Value Units Method Reference Comment
Δfsolid-137.52kcal/molReviewChase, 1998Data last reviewed in December, 1968
Quantity Value Units Method Reference Comment
solid12.24cal/mol*KReviewChase, 1998Data last reviewed in December, 1968

Liquid Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 1269. to 3500.
A 15.87799
B -0.542658
C 0.167616
D -0.017733
E 2.159434
F -134.6692
G 34.66468
H -130.5459
ReferenceChase, 1998
Comment Data last reviewed in December, 1968

Solid Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 298. to 1269.
A 12.66783
B -1.422598
C 3.002749
D 0.090398
E -0.116901
F -141.6525
G 27.20220
H -137.5201
ReferenceChase, 1998
Comment Data last reviewed in December, 1968

Ion clustering data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

Be2F5- + sodium fluoride = (Be2F5- • sodium fluoride)

By formula: Be2F5- + FNa = (Be2F5- • FNa)

Quantity Value Units Method Reference Comment
Δr65.2 ± 2.5kcal/molN/ANikitin, Sorokin, et al., 1980gas phase; value altered from reference due to conversion from electron convention to ion convention; B

(F2Sc+ • sodium fluoride) + sodium fluoride = (F2Sc+ • 2sodium fluoride)

By formula: (F2Sc+ • FNa) + FNa = (F2Sc+ • 2FNa)

Quantity Value Units Method Reference Comment
Δr83.kcal/molMSTsirlina, Gusarov, et al., 1986gas phase; Knudsen cell; M

(F2Sc+ • 2sodium fluoride) + sodium fluoride = (F2Sc+ • 3sodium fluoride)

By formula: (F2Sc+ • 2FNa) + FNa = (F2Sc+ • 3FNa)

Quantity Value Units Method Reference Comment
Δr72.kcal/molMSTsirlina, Gusarov, et al., 1986gas phase; Knudsen cell; M

(F2Sc+ • 3sodium fluoride) + sodium fluoride = (F2Sc+ • 4sodium fluoride)

By formula: (F2Sc+ • 3FNa) + FNa = (F2Sc+ • 4FNa)

Quantity Value Units Method Reference Comment
Δr67.kcal/molMSTsirlina, Gusarov, et al., 1986gas phase; Knudsen cell; M

Sodium ion (1+) + sodium fluoride = (Sodium ion (1+) • sodium fluoride)

By formula: Na+ + FNa = (Na+ • FNa)

Quantity Value Units Method Reference Comment
Δr62.7kcal/molMSTsirlina, Gusarov, et al., 1986gas phase; Knudsen cell; M

(Sodium ion (1+) • sodium fluoride) + sodium fluoride = (Sodium ion (1+) • 2sodium fluoride)

By formula: (Na+ • FNa) + FNa = (Na+ • 2FNa)

Quantity Value Units Method Reference Comment
Δr47.kcal/molMSTsirlina, Gusarov, et al., 1986gas phase; Knudsen cell; M

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Ion clustering data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

Nikitin, Sorokin, et al., 1980
Nikitin, M.I.; Sorokin, I.D.; Skokan, E.V.; Sidorov, L.N., Negative Ions in the Saturated Vapors of the Potassium Fluoride - Hafnium Tetrafluoride and Potassium Fluoride - Beryllium Difluoride Systems, Russ. J. Phys. Chem., 1980, 54, page]. [all data]

Tsirlina, Gusarov, et al., 1986
Tsirlina, E.A.; Gusarov, A.V.; Gorokhov, L.N., High Temp., 1986, 14, 1064. [all data]


Notes

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