Germanium monohydride
- Formula: GeH
- Molecular weight: 73.65
- IUPAC Standard InChI: InChI=1S/GeH/h1H
- IUPAC Standard InChIKey: ROUHNNRKLNITEM-UHFFFAOYSA-N
- CAS Registry Number: 13572-99-1
- 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| B (2Σ) | [41074] 1 | B ← X R | 39686 H | |||||||||
| ↳Barrow, Drummond, et al., 1953 | ||||||||||||
| B ← X R | 40573 H | |||||||||||
| ↳Barrow, Drummond, et al., 1953 | ||||||||||||
| A 2Δ | 25454 2 | [1185.15] Z | (127) 3 | 6.535 4 | 0.6196 | [0.000571] 5 | 1.611 | A ↔ X R | 25197.0 Z | |||
| ↳missing citation; missing citation; Veseth, 1973 | ||||||||||||
| a 4Σ(-) | [16747] 6 | [6.7654] 6 | [0.000460] | [1.5834] | a → X V | 15802.8 Z | ||||||
| ↳Kleman and Werhagen, 1953; Klynning, 1966 | ||||||||||||
| State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
| X 2Πr | 0 7 | [1833.77] Z | (37) 3 | 6.7259 8 | 0.1916 | [0.000326] 9 | 1.5880 | |||||
Notes
| 1 | Incompletely resolved bands. |
| 2 | A0 = 10.3, A1 = 6.1; moderate J dependence. For a more detailed theoretical discussion of this 2Δ state see Veseth, 1971. |
| 3 | Estimated from isotope shifts Klynning and Lindgren, 1966. |
| 4 | Spin-doubling constants γ = 0.473 (v=0) and γ= 0.362 (v=1). Broadening of absorption lines due to predissociation above 27000 cm-1. |
| 5 | D1 = 8.01E-4; also higher order constants. |
| 6 | Spin-splitting constants 13= 6.52, γ1 = 0.037, γ2 = 0.048. Note that the definitions of 13, γ1 and γ2 used in Klynning, 1966 are those of Hougen Hougen, 1962 and differ from those used by Martin and Merer [see ref. Klynning and Lindgren, 1966 of GeF). The B0 value in the abstract of Klynning, 1966 and quoted in DONNSPEC is clearly wrong. |
| 7 | A0 = 892.52 Klynning and Lindgren, 1966, A1 = 896.12 Klynning and Lindgren, 1966; small J dependence. See also Veseth, 1973. |
| 8 | Λ-type doubling, Δv(2Π1/2) = 0.496(J+1/2)-...; v=0 |
| 9 | D1 = 3.40E-4. |
| 10 | From the predissociation in A 2Δ Klynning and Lindgren, 1966; thermochemical data give the same value Barrow and Deutsch, 1960. |
| 11 | From the value for GeH. |
| 12 | A0 = 14.4, A1 = 9.9, A2 = 7.2; moderate J dependence. |
| 13 | Spin-doubling constants γ= 0.300 (v=0), γ= 0.281 (v=1), γ= 0.22 (v=2). Predissociation, see 4 . |
| 14 | D1 = 1.65E-4, D2 = 1.7E-4; also higher order constants. |
| 15 | A0 = 891.86 Klynning and Lindgren, 1966, A1 = 894.35 Klynning and Lindgren, 1966; small J dependence. See also Veseth, 1973. |
| 16 | Λ-type doubling; in Δv(2Π1/2) = 0.2506(J+1/2) - ...; v=0 |
| 17 | D1 = 0.824E-4. |
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.
Barrow, Drummond, et al., 1953
Barrow, R.F.; Drummond, G.; Garton, W.R.S.,
Ultra-violet bands associated with germanium,
Proc. Phys. Soc. London Sect. A, 1953, 66, 191. [all data]
Veseth, 1973
Veseth, L.,
Some anomalies in the electronic spectra of GeH, GeD, SnH, and SnD related to Hund's coupling case (c),
J. Mol. Spectrosc., 1973, 48, 283. [all data]
Kleman and Werhagen, 1953
Kleman, B.; Werhagen, E.,
A 4Σ--2Π-system in germanium hydride (GeH),
Ark. Fys., 1953, 6, 399. [all data]
Klynning, 1966
Klynning, L.,
On the 4Σ state of GeH,
Ark. Fys., 1966, 32, 563. [all data]
Veseth, 1971
Veseth, L.,
Second-order spin-orbit splitting in 2Δ states of diatomic molecules,
Physica (Amsterdam), 1971, 56, 286. [all data]
Klynning and Lindgren, 1966
Klynning, L.; Lindgren, B.,
Rotational analysis of the 2Δ-2Π band system of GeH and of GeD,
Ark. Fys., 1966, 32, 575. [all data]
Hougen, 1962
Hougen, J.T.,
The rotational energy levels of diatomic molecules in 4Σ electronic states,
Can. J. Phys., 1962, 40, 598. [all data]
Barrow and Deutsch, 1960
Barrow, R.F.; Deutsch, J.L.,
Gaseous SiH and GeH,
Proc. Chem. Soc. London, 1960, 122. [all data]
Notes
Go To: Top, Constants of diatomic molecules, References
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