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HAl+


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 27AlH+
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
A 2Pir (27686) 1 (1770)   6.851 2 0.248  0.00041  1.5914 A rarrow X V 27760.2 Z
missing citation; Holst, 1934
27593 (1770)   6.851 2 0.248  0.00041  1.5914 A rarrow X V 27667.8 Z
missing citation; Holst, 1934
X 2Sigma+ 0 (1620)   6.763 3 0.398  0.00047  1.6018  

Notes

1A= +108.
2 Holst, 1934 finds breaking-off in P and R at N=28 (v=0).
3Spin splitting constant gamma= +0.06.

References

Go To: Top, 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.

Holst, 1934
Holst, W., Uber das bandenspektrum des ionisierten aluminiumhydrides, Z. Phys., 1934, 89, 40. [all data]


Notes

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