Germanium 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 September, 1976

Symbols used in the table of constants
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 72GeH
B (2Sigma) [41074] 1          B larrow X R 39686 H
Barrow, Drummond, et al., 1953
           B larrow X R 40573 H
Barrow, Drummond, et al., 1953
A 2Delta 25454 2 [1185.15] Z (127) 3  6.535 4 0.6196  [0.000571] 5  1.611 A lrarrow X R 25197.0 Z
missing citation; missing citation; Veseth, 1973
a 4Sigma(-) [16747] 6    [6.7654] 6   [0.000460]  [1.5834] a rarrow X V 15802.8 Z
Kleman and Werhagen, 1953; Klynning, 1966
X 2Pir 0 7 [1833.77] Z (37) 3  6.7259 8 0.1916  [0.000326] 9  1.5880  


1Incompletely resolved bands.
2A0 = 10.3, A1 = 6.1; moderate J dependence. For a more detailed theoretical discussion of this 2Delta state see Veseth, 1971.
3Estimated from isotope shifts Klynning and Lindgren, 1966.
4Spin-doubling constants gamma = 0.473 (v=0) and gamma= 0.362 (v=1). Broadening of absorption lines due to predissociation above 27000 cm-1.
5D1 = 8.01E-4; also higher order constants.
6Spin-splitting constants 13= 6.52, gamma1 = 0.037, gamma2 = 0.048. Note that the definitions of 13, gamma1 and gamma2 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.
7A0 = 892.52 Klynning and Lindgren, 1966, A1 = 896.12 Klynning and Lindgren, 1966; small J dependence. See also Veseth, 1973.
8Lambda-type doubling, Deltav(2Pi1/2) = 0.496(J+1/2)-...; v=0
9D1 = 3.40E-4.
10From the predissociation in A 2Delta Klynning and Lindgren, 1966; thermochemical data give the same value Barrow and Deutsch, 1960.
11From the value for GeH.
12A0 = 14.4, A1 = 9.9, A2 = 7.2; moderate J dependence.
13Spin-doubling constants gamma= 0.300 (v=0), gamma= 0.281 (v=1), gamma= 0.22 (v=2). Predissociation, see 4 .
14D1 = 1.65E-4, D2 = 1.7E-4; also higher order constants.
15A0 = 891.86 Klynning and Lindgren, 1966, A1 = 894.35 Klynning and Lindgren, 1966; small J dependence. See also Veseth, 1973.
16Lambda-type doubling; in Deltav(2Pi1/2) = 0.2506(J+1/2) - ...; v=0
17D1 = 0.824E-4.


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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 4«SIGMA»--2«PI»-system in germanium hydride (GeH), Ark. Fys., 1953, 6, 399. [all data]

Klynning, 1966
Klynning, L., On the 4«SIGMA» state of GeH, Ark. Fys., 1966, 32, 563. [all data]

Veseth, 1971
Veseth, L., Second-order spin-orbit splitting in 2«DELTA» states of diatomic molecules, Physica (Amsterdam), 1971, 56, 286. [all data]

Klynning and Lindgren, 1966
Klynning, L.; Lindgren, B., Rotational analysis of the 2«DELTA»-2«PI» 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 4«SIGMA» 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]


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