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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
Deltafgas-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. - 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
Deltafliquid-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
Deltafsolid-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. - 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. - 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

Reaction 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.

Data compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
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. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

4sodium + Ethene, chlorotrifluoro- = 2carbon + sodium chloride + 3sodium fluoride

By formula: 4Na + C2ClF3 = 2C + ClNa + 3FNa

Quantity Value Units Method Reference Comment
Deltar-376.7 ± 1.3kcal/molCmKolesov, Zenkov, et al., 1963gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = -368.8 ± 1.3 kcal/mol; ALS

2Sodium hydroxide + acetyl fluoride = Acetic acid, sodium salt + sodium fluoride + Water

By formula: 2HNaO + C2H3FO = C2H3NaO2 + FNa + H2O

Quantity Value Units Method Reference Comment
Deltar-13.42 ± 0.02kcal/molCmPritchard and Skinner, 1950liquid phase; Corrected for CODATA value of «DELTA»fH; HF(100); ALS
Deltar-42.4kcal/molCmCarson and Skinner, 1949liquid phase; ALS

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

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

Quantity Value Units Method Reference Comment
Deltar65.2 ± 2.5kcal/molN/ANikitin, Sorokin, et al., 1980gas phase; value altered from reference due to conversion from electron convention to ion convention; B

Cyclobutane, octafluoro- + 4sodium = 4carbon + 8sodium fluoride

By formula: C4F8 + 4Na = 4C + 8FNa

Quantity Value Units Method Reference Comment
Deltar-714.5 ± 2.2kcal/molCcbKolesov, Talakin, et al., 1968gas phase; Correction of Kolesov, Talakin, et al., 1964; ALS

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

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

Quantity Value Units Method Reference Comment
Deltar72.kcal/molMSTsirlina, Gusarov, et al., 1986gas phase; Knudsen cell; M

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

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

Quantity Value Units Method Reference Comment
Deltar67.kcal/molMSTsirlina, Gusarov, et al., 1986gas phase; Knudsen cell; M

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

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

Quantity Value Units Method Reference Comment
Deltar47.kcal/molMSTsirlina, Gusarov, et al., 1986gas phase; Knudsen cell; M

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

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

Quantity Value Units Method Reference Comment
Deltar83.kcal/molMSTsirlina, Gusarov, et al., 1986gas phase; Knudsen cell; M

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

By formula: Na+ + FNa = (Na+ bullet FNa)

Quantity Value Units Method Reference Comment
Deltar62.7kcal/molMSTsirlina, Gusarov, et al., 1986gas phase; Knudsen cell; M

4sodium + Tetrafluoromethane = carbon + 4sodium fluoride

By formula: 4Na + CF4 = C + 4FNa

Quantity Value Units Method Reference Comment
Deltar-325.5 ± 2.2kcal/molCcbVorob'ev and Skuratov, 1960gas phase; ALS

Ethene, tetrafluoro- + 4sodium = 4sodium fluoride + 2Carbon

By formula: C2F4 + 4Na = 4FNa + 2C

Quantity Value Units Method Reference Comment
Deltar-385.0 ± 1.1kcal/molCmKolesov, Zenkov, et al., 1962gas phase; ALS

8sodium + Perfluoropropane = 3carbon + 8sodium fluoride

By formula: 8Na + C3F8 = 3C + 8FNa

Quantity Value Units Method Reference Comment
Deltar-660.0 ± 1.7kcal/molCcbKolesov, Talakin, et al., 1967gas phase; ALS

Gas phase ion energetics 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:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess

Electron affinity determinations

EA (eV) Method Reference Comment
0.520 ± 0.010LPESMiller, Leopold, et al., 1986B
1.10 ± 0.20LPESMiller and Lineberger, 1990Vertical Detachment Energy: 1.5±0.1 eV; B
0.41998NBAEDe Vreugd, Wijnaendts van Resandt, et al., 1979B
1.12 ± 0.21EIAEShevchenko, Iljin, et al., 1976From Na2BO2F; B
>1.34997EIAEEbinghaus, 1964From (NaF)2; B

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
Na+9.98 ± 0.15FEIShevchenko, Iljin, et al., 1976LLK
Na+9.9 ± 0.2FEIHastie, Zmbov, et al., 1968RDSH
Na+~12.FEIPorter and Schoonmaker, 1958RDSH

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- bullet sodium fluoride)

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

Quantity Value Units Method Reference Comment
Deltar65.2 ± 2.5kcal/molN/ANikitin, Sorokin, et al., 1980gas phase; value altered from reference due to conversion from electron convention to ion convention; B

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

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

Quantity Value Units Method Reference Comment
Deltar83.kcal/molMSTsirlina, Gusarov, et al., 1986gas phase; Knudsen cell; M

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

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

Quantity Value Units Method Reference Comment
Deltar72.kcal/molMSTsirlina, Gusarov, et al., 1986gas phase; Knudsen cell; M

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

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

Quantity Value Units Method Reference Comment
Deltar67.kcal/molMSTsirlina, Gusarov, et al., 1986gas phase; Knudsen cell; M

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

By formula: Na+ + FNa = (Na+ bullet FNa)

Quantity Value Units Method Reference Comment
Deltar62.7kcal/molMSTsirlina, Gusarov, et al., 1986gas phase; Knudsen cell; M

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

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

Quantity Value Units Method Reference Comment
Deltar47.kcal/molMSTsirlina, Gusarov, et al., 1986gas phase; Knudsen cell; M

Constants of diatomic molecules

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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 by: Klaus P. Huber and Gerhard H. Herzberg

Data collected through March, 1977

Symbols used in the table of constants
SymbolMeaning
State electronic state and / or symmetry symbol
Te minimum electronic energy (cm-1)
ωe vibrational constant – first term (cm-1)
ωexe vibrational constant – second term (cm-1)
ωeye vibrational constant – third term (cm-1)
Be rotational constant in equilibrium position (cm-1)
αe rotational constant – first term (cm-1)
γe rotation-vibration interaction constant (cm-1)
De centrifugal distortion constant (cm-1)
βe rotational constant – first term, centrifugal force (cm-1)
re internuclear distance (Å)
Trans. observed transition(s) corresponding to electronic state
ν00 position of 0-0 band (units noted in table)
Diatomic constants for 23Na19F
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
The electron energy loss spectrum has peaks at 5.7, 7.7, (18.5), 32.5 eV.
Geiger and Pfeiffer, 1968
Continuous absorption above 41000 cm-1.
Muller, 1927
A 1           A larrow X 
Barrow and Caunt, 1953
X 1Sigma+ 0 536 2 3 (Z) 3.4 2  0.43690127 0.00455869 2.335E-5 1.161E-6  1.925947 4  
Ritchie and Lew, 1964; Baikov and Vasilevskii, 1967
Rotation sp.
Bauer and Lew, 1963; Hollowell, Hebert, et al., 1964; Veazey and Gordy, 1965
Mol. beam rf electric 5
Hollowell, Hebert, et al., 1964; Graff and Werth, 1965
and magnetic reson.
Zeiger and Bolef, 1952; Logan, Cote, et al., 1952; Cote and Kusch, 1953

Notes

1Fluxuation bands in absorption from 39350 to 36600 cm-1.
2From the IR spectrum Ritchie and Lew, 1964, Baikov and Vasilevskii, 1967.
3For IR frequencies in low-temperature rare gas matrices, see Snelson and Pitzer, 1963.
4Rot.-vibr. sp. 3
5muel[D] = 8.1235 + 0.0644(v+1/2) + 0.00037(v+1/2)2, vleq2 Hollowell, Hebert, et al., 1964, Graff and Werth, 1965; see also Bauer and Lew, 1963. Na quadrupole coupling constant, dependence on v Bauer and Lew, 1963, Hollowell, Hebert, et al., 1964, Graff and Werth, 1965; earlier, less accurate values by the magnetic resonance method Zeiger and Bolef, 1952, Logan, Cote, et al., 1952, Cote and Kusch, 1953.
6Value recommended by Ham, 1974 and based on the highest Na levels observed in chemiluminescent emission from the reaction Na2 + F > NaF + Na*. It is in agreement with the flame-photometric value (5.25 eV) of Bulewicz, Phillips, et al., 1961, but substantially higher than the thermochemical value (4.93 eV) given by Brewer and Brackett, 1961 or derived from the data in Stull and Prophet, 1971.

References

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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]

Kolesov, Zenkov, et al., 1963
Kolesov, V.P.; Zenkov, I.D.; Skuratov, S.M., Standard enthalpy of formation of chlorotrifluoroethylene, Russ. J. Phys. Chem. (Engl. Transl.), 1963, 37, 115-116. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]

Pritchard and Skinner, 1950
Pritchard, H.O.; Skinner, H.A., The heat of hydrolysis of acetyl fluoride, J. Chem. Soc., 1950, 1099. [all data]

Carson and Skinner, 1949
Carson, A.S.; Skinner, H.A., 201. Carbon-halogen bond energies in the acetyl halides, J. Chem. Soc., 1949, 936-939. [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]

Kolesov, Talakin, et al., 1968
Kolesov, V.P.; Talakin, O.G.; Skuratov, S.M., Enthalpy of formation of some specimens of amorphous carbon, Russ. J. Phys. Chem. (Engl. Transl.), 1968, 42, 1218-1220. [all data]

Kolesov, Talakin, et al., 1964
Kolesov, V.P.; Talakin, O.G.; Skuratov, S.M., Standard enthalpy of formation of perfluorocyclobutane, Russ. J. Phys. Chem. (Engl. Transl.), 1964, 38, 930-931. [all data]

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

Vorob'ev and Skuratov, 1960
Vorob'ev, A.F.; Skuratov, S.M., Standard enthalpies of formation of CF4, Zh. Neorg. Khim., 1960, 5, 1398-1401. [all data]

Kolesov, Zenkov, et al., 1962
Kolesov, V.P.; Zenkov, I.D.; Skuratov, S.M., The standard enthalpy of formation of tetrafluoroethylene, Russ. J. Phys. Chem. (Engl. Transl.), 1962, 36, 45-47. [all data]

Kolesov, Talakin, et al., 1967
Kolesov, V.P.; Talakin, O.G.; Skuratov, S.M., Standard enthalpy of formation of perfluoropropane and enthalpies of formation of normal perfluoroalkanes, Vestn. Mosk. Univ. Khim., 1967, 22, 38-42. [all data]

Miller, Leopold, et al., 1986
Miller, T.M.; Leopold, D.G.; Murray, K.K.; Lineberger, W.C., Electron Affinities of the Alkali Halides and the Structure of their Negative Ions, J. Chem. Phys., 1986, 85, 5, 2368, https://doi.org/10.1063/1.451091 . [all data]

Miller and Lineberger, 1990
Miller, T.M.; Lineberger, W.C., Mass Spectra and Photodetachment of Sodium Fluoride Negative Ion Clusters, Int. J. Mass Spectrom. Ion Proc., 1990, 102, 239, https://doi.org/10.1016/0168-1176(90)80063-9 . [all data]

De Vreugd, Wijnaendts van Resandt, et al., 1979
De Vreugd, C.; Wijnaendts van Resandt, R.W.; Los, J.; Smith, B., Differential Cross Sections for Collisions of Negative Halogen Ions and Alkali Atoms, Chem. Phys., 1979, 42, 3, 305, https://doi.org/10.1016/0301-0104(79)80078-6 . [all data]

Shevchenko, Iljin, et al., 1976
Shevchenko, V.E.; Iljin, M.K.; Nikitin, O.T.; Sidorov, L.N., Mass-spectrometric study of mixed dimers M2BO2F, Int. J. Mass Spectrom. Ion Phys., 1976, 21, 279. [all data]

Ebinghaus, 1964
Ebinghaus, H.Z., Negative Ionen aus Alkalihalogeniden und Electronenaffinitaten der Alkalimetalle und Alkalihalogenide, Z. Naturfor., 1964, 19A, 727. [all data]

Hastie, Zmbov, et al., 1968
Hastie, J.W.; Zmbov, K.F.; Margrave, J.L., Mass spectrometric studies at high temperatures. XXIII. Vapor equilibria over molten NaSnF3 and KSnF3, J. Inorg. Nucl. Chem., 1968, 30, 729. [all data]

Porter and Schoonmaker, 1958
Porter, R.F.; Schoonmaker, R.C., Mass spectrometric study of the vaporization of LiF, NaF, and LiF-NaF mixtures, J. Chem. Phys., 1958, 29, 1070. [all data]

Geiger and Pfeiffer, 1968
Geiger, J.; Pfeiffer, H.-C., Untersuchung der Anregung innerer Elektronen von Alkalihalogenidmolekulen im Energieverlustspektrum von 25 keV-Elektronen, Z. Phys., 1968, 208, 105. [all data]

Muller, 1927
Muller, L.A., 4. absorptionsspektren der alkalihalogenide in wasseriger losung und im dampf, Ann. Phys. (Leipzig), 1927, 82, 39. [all data]

Barrow and Caunt, 1953
Barrow, R.F.; Caunt, A.D., The ultra-violet absorption spectra of some gaseous alkali-metal halides and the dissociation energy of fluorine, Proc. R. Soc. London A, 1953, 219, 120. [all data]

Ritchie and Lew, 1964
Ritchie, R.K.; Lew, H., Infrared spectra of NaF and KF, Can. J. Phys., 1964, 42, 43. [all data]

Baikov and Vasilevskii, 1967
Baikov, V.I.; Vasilevskii, K.P., Infrared spectra of sodium, potassium, rubidium, and cesium fluoride vapors, Opt. Spectrosc. Engl. Transl., 1967, 22, 198, In original 364. [all data]

Bauer and Lew, 1963
Bauer, R.K.; Lew, H., Rotational constants and electric dipole moment of NaF, Can. J. Phys., 1963, 41, 1461. [all data]

Hollowell, Hebert, et al., 1964
Hollowell, C.D.; Hebert, A.J.; Street, K., Jr., Radio-frequency and microwave spectra of NaF by the molecular-beam electric-resonance method, J. Chem. Phys., 1964, 41, 3540. [all data]

Veazey and Gordy, 1965
Veazey, S.E.; Gordy, W., Millimeter-wave molecular-beam spectroscopy: alkali fluorides, Phys. Rev. A: Gen. Phys., 1965, 138, 1303. [all data]

Graff and Werth, 1965
Graff, G.; Werth, G., Gleichzeitige Messung von Hyperfeinstruktur, Starkeffekt und Zeemaneffekt des 23Na19F mit einer Molekulstrahl-Resonanzapparatur, Z. Phys., 1965, 183, 223. [all data]

Zeiger and Bolef, 1952
Zeiger, H.J.; Bolef, D.I., Molecular beam magnetic resonance spectra of TlCl35 and TlCl37 at zero field, Phys. Rev., 1952, 85, 788. [all data]

Logan, Cote, et al., 1952
Logan, R.A.; Cote, R.E.; Kusch, P., The sign of the quadrupole interaction energy in diatomic molecules, Phys. Rev., 1952, 86, 280. [all data]

Cote and Kusch, 1953
Cote, R.E.; Kusch, P., Low frequency resonances in the spectra of diatomic molecules, Phys. Rev., 1953, 90, 103. [all data]

Snelson and Pitzer, 1963
Snelson, A.; Pitzer, K.S., Infrared spectra by matrix isolation of lithium fluoride, lithium chloride and sodium fluoride, J. Phys. Chem., 1963, 67, 882. [all data]

Ham, 1974
Ham, D.O., Energy limits in chemiluminescent, atom transfer reactions: bond dissociation energy of NaF, J. Chem. Phys., 1974, 60, 1802. [all data]

Bulewicz, Phillips, et al., 1961
Bulewicz, E.M.; Phillips, L.F.; Sugden, T.M., Determination of dissociation constants and heats of formation of simple molecules by flame photometry. Part 8. Stabilities of the gaseous diatomic halides of certain metals, Trans. Faraday Soc., 1961, 57, 921. [all data]

Brewer and Brackett, 1961
Brewer, L.; Brackett, E., The dissociation energies of gaseous alkali halides, Chem. Rev., 1961, 61, 425. [all data]

Stull and Prophet, 1971
Stull, D.R.; Prophet, H., JANAF Thermochemical Tables. Second Edition, Office of SRD (NSRDS-NBS 37), Washington, D.C., 1971, 0. [all data]


Notes

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