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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Gas phase ion energetics data
Go To: Top, 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
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 20.87 | S | Dabrowski and Herzberg, 1978 | LLK |
Constants of diatomic molecules
Go To: Top, 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 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, 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.
Dabrowski and Herzberg, 1978
Dabrowski, I.; Herzberg, G.,
The spectrum of HeNe+,
J. Mol. Spectrosc., 1978, 73, 183. [all data]
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, Gas phase ion energetics data, Constants of diatomic molecules, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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