Helium, compound with neon (1:1)
- Formula: HeNe
- Molecular weight: 24.1823
- IUPAC Standard InChI: InChI=1S/He.Ne
- IUPAC Standard InChIKey: CPBQJMYROZQQJC-UHFFFAOYSA-N
- CAS Registry Number: 12162-16-2
- Chemical structure:
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Constants of diatomic molecules
Go To: Top, 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 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Similar but unclassified bands near other strong Ne lines. | ||||||||||||
| ↳Tanaka and Yoshino, 1972 | ||||||||||||
| F | [120] 1 2 | F ← X 3 | 162050 | |||||||||
| ↳Tanaka and Yoshino, 1972 | ||||||||||||
| E | [40] 1 4 | E ← X 3 | 161340 | |||||||||
| ↳Tanaka and Yoshino, 1972 | ||||||||||||
| D | [30] 1 5 | D ← X 3 | 159590 | |||||||||
| ↳Tanaka and Yoshino, 1972 | ||||||||||||
| State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
| C | [100] 1 6 | C ← X 7 V | 159050 H | |||||||||
| ↳Tanaka and Yoshino, 1972 | ||||||||||||
| B | [40] 1 8 | B ← X 3 | 158860 | |||||||||
| ↳Tanaka and Yoshino, 1972 | ||||||||||||
| A | [150] 1 9 | A ← X 7 V | 158440 H | |||||||||
| ↳Tanaka and Yoshino, 1972 | ||||||||||||
| X 1Σ+ | 0 10 | 3.21 11 | 12 | |||||||||
Notes
| 1 | First observed ΔG, not necessarily ΔG(1/2). |
| 2 | Progression of five bands converging to 3d'[3/2]1u of Ne. |
| 3 | Very diffuse features. |
| 4 | Progression of six bands converging to 3d[1/2]1u of Ne. |
| 5 | Progression of four bands converging over a maximum to 4s'[1/2]1u of Ne. |
| 6 | Progression of six bands converging to 4s'[1/2]1u of Ne. |
| 7 | Diffuse band heads. |
| 8 | Progression of four bands converging over a maximum to 4s[3/2]1u of Ne. |
| 9 | Progression of three bands converging to 4s[3/2]1u of Ne. |
| 10 | Only v=0 is bound; see Bobetic and Barker, 1976. |
| 11 | From molecular beam scattering measurements Chen, Siska, et al., 1973. |
| 12 | Theoretical dipole moment function Matcha and Nesbet, 1967. |
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.
Tanaka and Yoshino, 1972
Tanaka, Y.; Yoshino, K.,
Absorption spectra of Ne2 and HeNe molecules in the vacuum-UV region,
J. Chem. Phys., 1972, 57, 2964. [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]
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]
Notes
Go To: Top, Constants of diatomic molecules, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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