Aluminum monoiodide
- Formula: AlI
- Molecular weight: 153.88601
- CAS Registry Number: 29977-41-1
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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 | 16.24 | kcal/mol | Review | Chase, 1998 | Data last reviewed in September, 1979 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 59.228 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in September, 1979 |
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) | 298. to 6000. |
|---|---|
| A | 8.938339 |
| B | 0.175127 |
| C | -0.065493 |
| D | 0.017617 |
| E | -0.032075 |
| F | 13.45980 |
| G | 69.81539 |
| H | 16.24000 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in September, 1979 |
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
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 9.3 ± 0.3 | EI | Kleinschmidt and Hildenbrand, 1978 | LLK |
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 December, 1975
| Symbol | Meaning |
|---|---|
| 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) |
| State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A 1Π 2 | A ← X | 31487 1 | ||||||||||
| ↳missing citation | ||||||||||||
| a 3Π1 | 22089.5 | 333.4 H | 2.0 | a ↔ X V | 22097.9 H | |||||||
| ↳missing citation | ||||||||||||
| a 3Π0 | 21889.3 | 337.2 H | 2.0 | a ↔ X VR | 21899.6 H | |||||||
| ↳missing citation | ||||||||||||
| X 1Σ+ | 0 | 316.1 H | 1.0 | 0.11769985 | 0.000558586 3 | 4 | 2.537102 | |||||
| ↳Wyse and Gordy, 1972 | ||||||||||||
Notes
| 1 | Vertical transition from v"= 0. |
| 2 | Unstable; diffuse fluctuation bands with various v". |
| 3 | αv= +1.0477E-6(v+1/2)2 - 2.46E-9(v+1/2)3 |
| 4 | Dv = [6.5212 - 0.00957(v+1/2)]E-8; He = -4.590E-15. |
| 5 | From the analysis of fluctuation bands Barrow, 1960. |
| 6 | Values of eqQv = (v=0...3) in Torring, Tiemann, et al., 1973. |
References
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Constants of diatomic molecules, NIST Free Links, 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]
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]
Wyse and Gordy, 1972
Wyse, F.C.; Gordy, W.,
Millimeter wave rotational spectra of AlCl, AlBr, and AlI,
J. Chem. Phys., 1972, 56, 2130. [all data]
Barrow, 1960
Barrow, R.F.,
Dissociation energies of the gaseous monohalides of boron, aluminium, gallium, indium, and thallium,
Trans. Faraday Soc., 1960, 56, 952. [all data]
Torring, Tiemann, et al., 1973
Torring, T.; Tiemann, E.; Hoeft, J.,
Hyperfeinstruktur von AlJ,
Z. Naturforsch. A, 1973, 28, 1062. [all data]
Notes
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- 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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