Sodium iodide


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-266.51kJ/molReviewChase, 1998Data last reviewed in September, 1963
Quantity Value Units Method Reference Comment
liquid,1 bar120.75J/mol*KReviewChase, 1998Data last reviewed in September, 1963
Quantity Value Units Method Reference Comment
Δfsolid-287.86kJ/molReviewChase, 1998Data last reviewed in September, 1963
Quantity Value Units Method Reference Comment
solid98.50J/mol*KReviewChase, 1998Data last reviewed in September, 1963

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 (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 933. to 3000.
A 64.85190
B 0.000065
C -0.000024
D 0.000003
E 0.000020
F -289.0120
G 191.7340
H -266.5080
ReferenceChase, 1998
Comment Data last reviewed in September, 1963

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 (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 298. to 933.
A 50.19963
B 10.22787
C 0.564543
D -0.221018
E -0.094625
F -303.6036
G 155.6440
H -287.8592
ReferenceChase, 1998
Comment Data last reviewed in September, 1963

Phase change 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.

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

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Temperature (K) A B C Reference Comment
1040. to 1577.5.037027405.912-104.186Stull, 1947Coefficents calculated by NIST from author's data.

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
MS - José A. Martinho Simões

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Individual Reactions

2Sodium hydroxide + Cyanogen iodide = Sodium iodide + Water + CNO.Na

By formula: 2HNaO + CIN = INa + H2O + CNO.Na

Quantity Value Units Method Reference Comment
Δr-193.9 ± 0.3kJ/molCmLord and Woolf, 1954solid phase; Heat of hydrolysis; ALS

C8H5MoNaO3 (solution) + Iodine (cr) = C8H5IMoO3 (solution) + Sodium iodide (cr)

By formula: C8H5MoNaO3 (solution) + I2 (cr) = C8H5IMoO3 (solution) + INa (cr)

Quantity Value Units Method Reference Comment
Δr-133.1 ± 5.4kJ/molRSCNolan, López de la Vega, et al., 1986solvent: Tetrahydrofuran; MS

C8H5MoNaO3 (solution) + Methane, iodo- (l) = C9H8MoO3 (solution) + Sodium iodide (cr)

By formula: C8H5MoNaO3 (solution) + CH3I (l) = C9H8MoO3 (solution) + INa (cr)

Quantity Value Units Method Reference Comment
Δr-32.2 ± 1.3kJ/molRSCNolan, López de la Vega, et al., 1986solvent: Tetrahydrofuran; MS

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 evaluated as indicated in comments:
L - Sharon G. Lias

Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
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

Quantity Value Units Method Reference Comment
IE (evaluated)7.62 ± 0.02eVN/AN/AL

Electron affinity determinations

EA (eV) Method Reference Comment
0.87 ± 0.10LPESMiller, Leopold, et al., 1986B

Ionization energy determinations

IE (eV) Method Reference Comment
7.6EIMetallinou, Herstad, et al., 1990LL
8.2 ± 0.1EIHilpert and Gingerich, 1983LBLHLM
7.8 ± 0.4EIEmons, Horlbeck, et al., 1982LBLHLM
7.6 ± 0.1PEPotts and Price, 1977LLK
7.6 ± 0.1PEPotts, Williams, et al., 1974LLK
7.64 ± 0.02PIBerkowitz, 1971LLK
7.64PIBerkowitz and Chupka, 1966RDSH
8.0 ± 0.3EIBerkowitz and Chupka, 1966RDSH
8.7 ± 0.3EIPlatel, 1965RDSH
8.0PEGoodman, Allen, et al., 1974Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
I+14.42 ± 0.02NaEIHilpert and Gingerich, 1983LBLHLM
I+14.4 ± 0.3NaEIPlatel, 1965RDSH
Na+8.7 ± 0.1IEIHilpert and Gingerich, 1983LBLHLM
Na+8.138IPIBerkowitz and Chupka, 1966RDSH
Na+8.7 ± 0.3IEIPlatel, 1965RDSH

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]

Stull, 1947
Stull, Daniel R., Vapor Pressure of Pure Substances. Organic and Inorganic Compounds, Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 . [all data]

Lord and Woolf, 1954
Lord, G.; Woolf, A.A., The cyanogen halides. Part III. Their heats of formation and free energies, J. Chem. Soc., 1954, 2546-2551. [all data]

Nolan, López de la Vega, et al., 1986
Nolan, S.P.; López de la Vega, R.; Hoff, C.D., J. Organometal. Chem., 1986, 315, 187. [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]

Metallinou, Herstad, et al., 1990
Metallinou, M.M.; Herstad, O.; Ostvold, T.; Papatheodorou, G.N., Gas complexation in the Nal-Erl3 system, Acta Chem. Scand., 1990, 44, 683. [all data]

Hilpert and Gingerich, 1983
Hilpert, K.; Gingerich, K.A., Mass spectrometric study on the evaporation of phases of the system NaI-SnI2, Int. J. Mass Spectrom. Ion Phys., 1983, 47, 247. [all data]

Emons, Horlbeck, et al., 1982
Emons, H.-H.; Horlbeck, W.; Kiessling, D., Massenspektrometrische untersuchung der gasphase uber alkalimetalliodiden, Z. Anorg. Allg. Chem., 1982, 488, 212. [all data]

Potts and Price, 1977
Potts, A.W.; Price, W.C., Photoelectron studies of ionic materials using molecular beam techniques, Phys. Scr., 1977, 16, 191. [all data]

Potts, Williams, et al., 1974
Potts, A.W.; Williams, T.A.; Price, W.C., Photoelectron spectra and electronic structure of diatomic alkali halides, Proc. Roy. Soc. London A, 1974, 341, 147. [all data]

Berkowitz, 1971
Berkowitz, J., Photoionization mass spectrometry photoelectron spectroscopy of high temperature vapor, Adv. High Temp. Chem., 1971, 3, 123. [all data]

Berkowitz and Chupka, 1966
Berkowitz, J.; Chupka, W.A., Photoionization of high-temperature vapors. I. The iodides of sodium, magnesium, and thallium, J. Chem. Phys., 1966, 45, 1287. [all data]

Platel, 1965
Platel, G., Mesures des potentials d'apparition des ions obtenus par impact electronique dans la phase vapeur des iodures alcalins et des melanges LiI-MI, J. Chim. Phys., 1965, 62, 1176. [all data]

Goodman, Allen, et al., 1974
Goodman, T.D.; Allen, J.D., Jr.; Cusachs, L.C.; Schweitzer, G.K., The photoelectron spectra of gaseous alkali halides, J. Electron Spectrosc. Relat. Phenom., 1974, 3, 289. [all data]


Notes

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