calcium iodide
- Formula: CaI2
- Molecular weight: 293.887
- CAS Registry Number: 10102-68-8
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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 |
|---|---|---|---|---|---|
| ΔfH°gas | -258.15 | kJ/mol | Review | Chase, 1998 | Data last reviewed in June, 1974 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 327.57 | J/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1974 |
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 (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 2500. to 6000. |
|---|---|
| A | 62.28888 |
| B | 0.059147 |
| C | -0.016018 |
| D | 0.001365 |
| E | -0.149482 |
| F | -277.2285 |
| G | 402.0878 |
| H | -258.1532 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in June, 1974 |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, References, Notes
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:
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
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 9.6 | S | Emons, Kiessling, et al., 1982 | LBLHLM |
| 8.7 | PE | Lee and Potts, 1979 | LLK |
| 9.39 ± 0.04 | PE | Lee and Potts, 1979 | Vertical value; LLK |
| 10.1 | PE | Hammer, Allen, et al., 1978 | Vertical value; LLK |
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| CaI+ | 9.95 | I | S | Emons, Kiessling, et al., 1982 | LBLHLM |
References
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics 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]
Emons, Kiessling, et al., 1982
Emons, H.-H.; Kiessling, D.; Horlbeck, W.,
Dampfdruckmessungen und massenspektrometrische untersuchungen der gasphase uber erdalkalimetallhalogeniden,
Z. Anorg. Allg. Chem., 1982, 488, 219. [all data]
Lee and Potts, 1979
Lee, E.P.F.; Potts, A.W.,
An investigation of the valence shell electronic structure of alkaline earth halides by using Ab initio S. C. F. calculations and photoelectron spectroscopy,
Proc. R. Soc. London A:, 1979, 365, 395. [all data]
Hammer, Allen, et al., 1978
Hammer, C.A.; Allen, J.D., Jr.; Cusachs, L.C.; Schweitzer, G.K.,
The high-temperature photoelectron spectra of alkaline-earth chlorides and iodides,
J. Electron Spectrosc. Relat. Phenom., 1978, 13, 149. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy S°gas,1 bar Entropy of gas at standard conditions (1 bar) ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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