Argon, compound with helium (1:1)
- Formula: ArHe
- Molecular weight: 43.951
- IUPAC Standard InChI: InChI=1S/Ar.He
- IUPAC Standard InChIKey: CFQGDIWRTHFZMQ-UHFFFAOYSA-N
- CAS Registry Number: 12254-69-2
- Chemical structure:
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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 September, 1976
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| X 1Σ+ | 0 1 | 3.51 2 | 3 | |||||||||
| ↳Bosomworth and Gush, 1965 | ||||||||||||
Notes
| 1 | Only v=0 is bound; see Bobetic and Barker, 1976 |
| 2 | From molecular beam scattering measurements; average of values given by Chen, Siska, et al., 1973 and Smith, Rulis, et al., 1975. |
| 3 | Dipole moment function from ab initio calculations Matcha and Nesbet, 1967 and from translational absorption spectra Bar-Ziv and Weiss, 1973. |
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.
Bosomworth and Gush, 1965
Bosomworth, D.R.; Gush, H.P.,
Collision-induced absorption of compressed gases in the far infrared, Part II,
Can. J. Phys., 1965, 43, 751. [all data]
Bobetic and Barker, 1976
Bobetic, M.V.; Barker, J.A.,
Vibrational levels of heteronuclear rare gas van der Waals molecules,
J. Chem. Phys., 1976, 64, 2367-2369. [all data]
Chen, Siska, et al., 1973
Chen, C.H.; Siska, P.E.; Lee, Y.T.,
Intermolecular potentials from crossed beam differential elastic scattering measurements. VIII. He+Ne, He+Ar, He+Kr, and He+Xe,
J. Chem. Phys., 1973, 59, 2, 601-610. [all data]
Smith, Rulis, et al., 1975
Smith, K.M.; Rulis, A.M.; Scoles, G.; Aziz, R.A.; Duquette, G.,
Intermolecular forces in gaseous mixtures: He-Ar,
J. Chem. Phys., 1975, 63, 5, 2250-2252. [all data]
Matcha and Nesbet, 1967
Matcha, R.L.; Nesbet, R.K.,
Electric dipole moments of rare-gas diatomic molecules,
Phys. Rev., 1967, 160, 1, 72-75. [all data]
Bar-Ziv and Weiss, 1973
Bar-Ziv, E.; Weiss, S.,
Dipole moment of interacting rare-gas atoms,
Chem. Phys. Lett., 1973, 19, 1, 148-151. [all data]
Notes
Go To: Top, Constants of diatomic molecules, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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