Aluminum monoiodide

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°gas67.95kJ/molReviewChase, 1998Data last reviewed in September, 1979
Quantity Value Units Method Reference Comment
S°gas,1 bar247.81J/mol*KReviewChase, 1998Data 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 (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 37.39801
B 0.732731
C -0.274022
D 0.073707
E -0.134200
F 56.31580
G 292.1076
H 67.94816
ReferenceChase, 1998
Comment Data last reviewed in September, 1979

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

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 27Al127I
StateTeωeωexeωeyeBeαeγeDeβereTrans.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

1Vertical transition from v"= 0.
2Unstable; diffuse fluctuation bands with various v".
3αv= +1.0477E-6(v+1/2)2 - 2.46E-9(v+1/2)3
4Dv = [6.5212 - 0.00957(v+1/2)]E-8; He = -4.590E-15.
5From the analysis of fluctuation bands Barrow, 1960.
6Values of eqQv = (v=0...3) in Torring, Tiemann, et al., 1973.

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]

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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