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Germanium monohydride


Reaction thermochemistry data

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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: John E. Bartmess

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Individual Reactions

Ge- + Hydrogen cation = Germanium monohydride

By formula: Ge- + H+ = GeH

Quantity Value Units Method Reference Comment
Deltar1457. ± 21.kJ/molD-EAScheer, Bilodeau, et al., 1998gas phase; Given: 1.232712(15) eV
Quantity Value Units Method Reference Comment
Deltar1434. ± 22.kJ/molH-TSScheer, Bilodeau, et al., 1998gas phase; Given: 1.232712(15) eV

Gas phase ion energetics data

Go To: Top, Reaction thermochemistry data, 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 by: John E. Bartmess

View reactions leading to GeH+ (ion structure unspecified)

De-protonation reactions

Ge- + Hydrogen cation = Germanium monohydride

By formula: Ge- + H+ = GeH

Quantity Value Units Method Reference Comment
Deltar1457. ± 21.kJ/molD-EAScheer, Bilodeau, et al., 1998gas phase; Given: 1.232712(15) eV
Quantity Value Units Method Reference Comment
Deltar1434. ± 22.kJ/molH-TSScheer, Bilodeau, et al., 1998gas phase; Given: 1.232712(15) eV

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
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 72GeH
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
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
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
X 2Pir 0 7 [1833.77] Z (37) 3  6.7259 8 0.1916  [0.000326] 9  1.5880  

Notes

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.

References

Go To: Top, Reaction thermochemistry data, 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.

Scheer, Bilodeau, et al., 1998
Scheer, M.; Bilodeau, R.C.; Brodie, C.A.; Haugen, H.K., Systematic study of the stable states of C-, Si-, Ge-, and Sn- via infrared laser spectroscopy, Phys. Rev. A, 1998, 58, 4, 2844-2856, https://doi.org/10.1103/PhysRevA.58.2844 . [all data]

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]


Notes

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