Arsenic monohydride
- Formula: AsH
- Molecular weight: 75.92954
- IUPAC Standard InChIKey: UIESIEAPEWREMY-UHFFFAOYSA-N
- CAS Registry Number: 12628-08-9
- 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 February, 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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
A 3Πi 0 | 1 | [1207.5] 2 Z | [6.5623] 3 4 | 0.886 2 | [0.000703] | [1.6203] 5 | A ← X R | 30518.34 Z | ||||
↳Dixon and Lamberton, 1968; Veseth, 1972 | ||||||||||||
A 3Πi 1 | [6.4726] 6 4 | [0.000624] | A ← X R | 29821.97 Z | ||||||||
↳Dixon and Lamberton, 1968; Veseth, 1972 | ||||||||||||
A 3Πi 2 | [6.3387] 4 | [0.000554] | A ← X R | 29282.16 Z | ||||||||
↳Dixon and Lamberton, 1968; Veseth, 1972 | ||||||||||||
X 3Σ- | 0 7 | (2130) | [7.1998] 7 | [0.000329] | [1.5344] |
Notes
1 | A0 = -615.4. Small J-dependence Veseth, 1972. |
2 | ΔG(1/2) and α for the 3Π0+ component only. |
3 | Λ-type doubling,Δνef(v=0) = +44.72 + 0.0056J(J+1). |
4 | Lines are sharp for the 3Π0+ state only. Line width increases in the order 3Π0+ < 3Π0- < 3Π1 < 3Π2, and also with increasing vibrational energy. The predissociation is due to interaction with the unstable 5Σ- state arising from As(4S) + H(2S) Dixon and Lamberton, 1968. |
5 | From the "true" B0 values in Veseth, 1972. |
6 | Λ-type doubling,Δνef(v=0) = +0.0214J(J+1). |
7 | Spin splitting constants λ0 = +58.87, γ0 = -0.281. |
8 | From the predissociation in A 3Π. |
9 | From a short extrapolation Dixon and Lamberton, 1968 of the 3Π state to the limit As(2D) + H(2S). |
10 | A0 = -616.9, small J-dependence Veseth, 1972; A1 = -599.8. |
11 | Λ-type doubling, Δνef(v=0) = +43.39 + 0.00472J(J+1). |
12 | Λ-type doubling, Δνef(v=0) = +0.0046J(J+1). |
13 | Spin splitting constants λ0 = +58.811, γ0 = -0.l475. |
14 | H0 = +5E-9. |
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.
Dixon and Lamberton, 1968
Dixon, R.N.; Lamberton, H.M.,
The A, 3Πi-X, 3Σ- band systems of AsH and AsD,
J. Mol. Spectrosc., 1968, 25, 12. [all data]
Veseth, 1972
Veseth, I.,
Fine structure of 3Π and 3Σ- states in diatomic molecules,
J. Phys. B:, 1972, 5, 229. [all data]
Notes
Go To: Top, Constants of diatomic molecules, References
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