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Aluminum monochloride


Gas phase thermochemistry data

Go To: Top, Gas phase ion energetics data, Constants of diatomic molecules, 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
Deltafgas-12.30kcal/molReviewChase, 1998Data last reviewed in September, 1979
Quantity Value Units Method Reference Comment
gas,1 bar54.481cal/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 (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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View table.

Temperature (K) 298. - 6000.
A 8.798301
B 0.318413
C -0.105915
D 0.018027
E -0.054193
F -15.11820
G 64.73291
H -12.30000
ReferenceChase, 1998
Comment Data last reviewed in September, 1979

Gas phase ion energetics data

Go To: Top, Gas phase thermochemistry data, Constants of diatomic molecules, 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:
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 AlCl+ (ion structure unspecified)

Ionization energy determinations

IE (eV) Method Reference Comment
9.4PEHildenbrand, 1977LLK
9.5 ± 0.3EIHildenbrand, 1970RDSH
9.4 ± 0.4EIHildenbrand and Theard, 1969RDSH

Constants of diatomic molecules

Go To: Top, Gas phase thermochemistry data, 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.

Data compiled by: Klaus P. Huber and Gerhard H. Herzberg

Data collected through November, 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 27Al35Cl
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
Fragments of additional systems in the region 48200 - 54900 cm-1.
Reddy and Rao, 1957
b (3Sigma) (43591) (350) 1   [0.226] 2     [2.21] b rarrow a R 18847.40 HQ
missing citation
           R 18911 (Z)
missing citation
           R 19895.00 HQ
missing citation
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
A 1Pi 38254.0 449.96 HQ 4.37 3 -0.216 0.259 4 0.006    2.067 A lrarrow X RV 38237.7 HQ
missing citation; Mahanti, 1934; missing citation; Miescher, 1935
a 3Pir 24658 524.35 HQ 2.175  0.250 5 0.002    2.10 a rarrow X V 24680 (Z)
missing citation
24593.84 524.35 HQ 2.175  0.250 5 0.002    2.10 a rarrow X V 24615.31 HQ
missing citation
24528 524.35 HQ 2.175  0.250 5 0.002    2.10 a rarrow X V 24541.65 HP
missing citation
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
X 1Sigma+ 0 481.3 HQ 1.95  0.24393012 0.00161113 6  2.5027E-07 7 -0.0053E-7 2.130113 8 9  
Lide, 1965; Wyse and Gordy, 1972

Notes

1Estimated from observed isotope shifts.
2v > 0 probably predissociated.
3This state may have a potential hump of ~ 0.26 eV. Barrow, 1954, Barrow, 1960
4Predissociation in v=10 missing citation.
5Estimated from P and Q head separations.
6alphav= +4.697E-6(v+1/2)2 - 5.7E-9(v+1/2)3.
7He= -4.456E-14.
8From the corrected Be = 0.24394229.
9Microwave sp. 11
10Thermochemical value [see Appendix of Hildenbrand and Theard, 1969] See also Barrow, 1960.
11muel = 1 to 2 D Lide, 1965. Values of eqQ in Lide, 1965, Hoeft, Torring, et al., 1973.

References

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Constants of diatomic molecules, 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]

Hildenbrand, 1977
Hildenbrand, D.L., Dissociation energies of CaBr, SrBr, BaBr, and BaCl from mass spectrometric studies of gaseous equilibria, J. Chem. Phys., 1977, 66, 3526. [all data]

Hildenbrand, 1970
Hildenbrand, D.L., Dissociation energies and chemical bonding in the alkaline-earth chlorides from mass spectrometric studies, J. Chem. Phys., 1970, 52, 5751. [all data]

Hildenbrand and Theard, 1969
Hildenbrand, D.L.; Theard, L.P., Mass spectrometric measurement of the dissociation energies of BeCi and BeCl2, J. Chem. Phys., 1969, 50, 5350. [all data]

Reddy and Rao, 1957
Reddy, S.P.; Rao, P.T., The emission spectrum of aluminum monochloride in the vacuum ultraviolet, Can. J. Phys., 1957, 35, 912. [all data]

Mahanti, 1934
Mahanti, P.C., Das bandenspektrum des aluminiumchlorids, Z. Phys., 1934, 88, 550. [all data]

Miescher, 1935
Miescher, E., Bandenspektren von bor- und aluminium-halogeniden, Helv. Phys. Acta, 1935, 8, 279. [all data]

Lide, 1965
Lide, D.R., Jr., High-temperature microwave spectroscopy: AlF and AlCl, J. Chem. Phys., 1965, 42, 1013. [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, 1954
Barrow, R.F., Maxima in the potential energy-distance functions of diatomic molecules, J. Chem. Phys., 1954, 22, 573. [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]

Hoeft, Torring, et al., 1973
Hoeft, J.; Torring, T.; Tiemann, E., Hyperfeinstruktur von AlCl und AlBr, Z. Naturforsch. A, 1973, 28, 1066. [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Constants of diatomic molecules, References