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Arsenic monohydride


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 February, 1976

Symbols used in the table of constants
SymbolMeaning
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)
Diatomic constants for 75AsH
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
A 3Pii 0 1 [1207.5] 2 Z   [6.5623] 3 4 0.886 2  [0.000703]  [1.6203] 5 A larrow X R 30518.34 Z
Dixon and Lamberton, 1968; Veseth, 1972
A 3Pii 1     [6.4726] 6 4   [0.000624]   A larrow X R 29821.97 Z
Dixon and Lamberton, 1968; Veseth, 1972
A 3Pii 2     [6.3387] 4   [0.000554]   A larrow X R 29282.16 Z
Dixon and Lamberton, 1968; Veseth, 1972
X 3Sigma- 0 7 (2130)   [7.1998] 7   [0.000329]  [1.5344]  

Notes

1A0 = -615.4. Small J-dependence Veseth, 1972.
2DeltaG(1/2) and alpha for the 3Pi0+ component only.
3Lambda-type doubling,Deltanuef(v=0) = +44.72 + 0.0056J(J+1).
4Lines are sharp for the 3Pi0+ state only. Line width increases in the order 3Pi0+ < 3Pi0- < 3Pi1 < 3Pi2, and also with increasing vibrational energy. The predissociation is due to interaction with the unstable 5Sigma- state arising from As(4S) + H(2S) Dixon and Lamberton, 1968.
5From the "true" B0 values in Veseth, 1972.
6Lambda-type doubling,Deltanuef(v=0) = +0.0214J(J+1).
7Spin splitting constants lambda0 = +58.87, gamma0 = -0.281.
8From the predissociation in A 3Pi.
9From a short extrapolation Dixon and Lamberton, 1968 of the 3Pi state to the limit As(2D) + H(2S).
10A0 = -616.9, small J-dependence Veseth, 1972; A1 = -599.8.
11Lambda-type doubling, Deltanuef(v=0) = +43.39 + 0.00472J(J+1).
12Lambda-type doubling, Deltanuef(v=0) = +0.0046J(J+1).
13Spin splitting constants lambda0 = +58.811, gamma0 = -0.l475.
14H0 = +5E-9.

References

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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, 3«PI»i-X, 3«SIGMA»- band systems of AsH and AsD, J. Mol. Spectrosc., 1968, 25, 12. [all data]

Veseth, 1972
Veseth, I., Fine structure of 3«PI» and 3«SIGMA»- states in diatomic molecules, J. Phys. B:, 1972, 5, 229. [all data]


Notes

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