Aluminum monobromide


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
Δfgas15.90kJ/molReviewChase, 1998Data last reviewed in September, 1979
Quantity Value Units Method Reference Comment
gas,1 bar239.61J/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 37.06329
B 1.117652
C -0.387744
D 0.074826
E -0.158509
F 4.270191
G 283.2535
H 15.89903
ReferenceChase, 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

View reactions leading to AlBr+ (ion structure unspecified)

Ionization energy determinations

IE (eV) Method Reference Comment
9.3PEHildenbrand, 1977LLK

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 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 27Al79Br
StateTeωeωexeωeyeBeαeγeDeβereTrans.ν00
A 1Π 35879.5 297.2 HQ 6.40 1 -0.527 0.1555 2 0.00216 3 -0.000175 0.00000018 4  2.322 A ↔ X R 35837.8 HQ
Crawford and Ffolliott, 1933; missing citation; Mahanti, 1935; missing citation; Jennergren, 1948
a 3Π1 23779.3 410.32 HQ 1.75  0.164 5 0.001    2.26 a → X V 23795.3 HQ
Miescher, 1935; missing citation
a 3Π0 23647 411.2 (Z) 1.75        a → X V (23663) 6 (Z)
X 1Σ+ 0 378.0 HQ 1.28  0.15919713 0.000860449 2.030E-06 1.1285E-07 7 -2.07E-10 2.294807 8  

Notes

1This state may have a potential hump of ~ 0.20 eV Barrow, 1960, Barrow, 1961.
2Predissociation for v > 3 According to Ram, Upadhya, et al., 1973 emission from v=2,3 breaks off at J=93,67, respectively.
3missing note
4Rapidly increasing with v.
5Estimated from P and Q head separations.
6P head at 23657.9 cm-1.
7He = -1.119E-14.
8From the corrected Be = 0.15920431.
9Thermochemical value Barrow, 1961; 4.58 eV from predissociation in A 1Π.
10For values of eqQ see Hoeft, Torring, 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]

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]

Crawford and Ffolliott, 1933
Crawford, F.H.; Ffolliott, C.F., The band spectra of the halides of aluminum, Phys. Rev., 1933, 44, 953. [all data]

Mahanti, 1935
Mahanti, P.C., The band spectrum of aluminum bromide, Indian J. Phys., 1935, 9, 369. [all data]

Jennergren, 1948
Jennergren, C.G., Band spectrum of aluminum bromide (AlBr), Ark. Mat. Astron. Fys., 1948, 35, 22, 1. [all data]

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

Barrow, 1961
Barrow, R.F., Triplet bands of carbon monoxide: the system e3Σ - a3Π, Nature (London), 1961, 189, 480. [all data]

Ram, Upadhya, et al., 1973
Ram, R.S.; Upadhya, K.N.; Rai, D.K.; Singh, J., Rotational analysis of the A1Π-X1Σ system of aluminum monobromide. Determination of dissociation energy by predissociation, Opt. Pura Apl., 1973, 6, 38. [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

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