Barium monoiodide
- Formula: BaI
- Molecular weight: 264.231
- CAS Registry Number: 12524-20-8
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Gas phase thermochemistry data
Go To: Top, Gas phase ion energetics data, References, Notes
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 | -42.42 | kJ/mol | Review | Chase, 1998 | Data last reviewed in June, 1974 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 278.72 | 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) | 298. to 6000. |
|---|---|
| A | 37.78100 |
| B | 0.135220 |
| C | 0.068296 |
| D | 0.022904 |
| E | -0.059791 |
| F | -53.89220 |
| G | 324.0650 |
| H | -42.41740 |
| 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:
LL - Sharon G. Lias and Joel F. Liebman
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
View reactions leading to BaI+ (ion structure unspecified)
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 5.08 ± 0.04 | EVAL | Belyaev, Gotkis, et al., 1990 | LL |
| 5.0 ± 0.3 | EI | Kleinschmidt and Hildenbrand, 1978 | LLK |
| 6.0 ± 0.4 | DER | Hastie and Margrave, 1968 | RDSH |
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]
Belyaev, Gotkis, et al., 1990
Belyaev, V.N.; Gotkis, I.S.; Lebedeva, N.L.; Krasnov, K.S.,
Ionization potentials of MX molecules (M = Ca, Sr, Ba; X = F, Cl, Br, I, OH, O),
Russ. J. Phys. Chem., 1990, 64, 773. [all data]
Kleinschmidt and Hildenbrand, 1978
Kleinschmidt, P.D.; Hildenbrand, D.L.,
Dissociation energies of CaI, SrI, and BaI from high temperature mass spectrometry,
J. Chem. Phys., 1978, 68, 2819. [all data]
Hastie and Margrave, 1968
Hastie, J.W.; Margrave, J.L.,
Ionization potentials and molecule-ion dissociation energies for diatomic metal halides,
Fluorine Chem. Rev., 1968, 2, 77. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
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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