Germylene


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: José A. Martinho Simões

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Individual Reactions

Germyl radical (g) = Hydrogen atom (g) + Germylene (g)

By formula: H3Ge (g) = H (g) + H2Ge (g)

Quantity Value Units Method Reference Comment
Δr>56.4kcal/molPIMSRuscic, Schwarz, et al., 1990Temperature: 0 K. A value of 59.0 kcal/mol is recommended in Ruscic, Schwarz, et al., 1990.

Germylene (g) = HGe (g) + Hydrogen atom (g)

By formula: H2Ge (g) = HGe (g) + H (g)

Quantity Value Units Method Reference Comment
Δr<68.8kcal/molPIMSRuscic, Schwarz, et al., 1990Temperature: 0 K. A value of 66.2 kcal/mol is recommended in Ruscic, Schwarz, et al., 1990.

Gas phase ion energetics 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 as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
B - John E. Bartmess

View reactions leading to H2Ge+ (ion structure unspecified)

Electron affinity determinations

EA (eV) Method Reference Comment
1.0970 ± 0.0027LPESMiller, Miller, et al., 1986B

Ionization energy determinations

IE (eV) Method Reference Comment
≤9.25PIRuscic, Schwarz, et al., 1990LL

Vibrational and/or electronic energy levels

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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: Marilyn E. Jacox

State:   A


 Energy 
 (cm-1
 Med.   Transition   λmin 
 (nm) 
 λmax 
 (nm) 
 References

To = 16325.54 gas A-X 489 850 Saito and Obi, 1993
Saito and Obi, 1994
Karolczak, Harper, et al., 1995
Campargue and Escribano, 1999
Smith, Clouthier, et al., 2000


Vib. 
sym. 
 No.   Approximate 
 type of mode 
 cm-1   Med.   Method   References

a1 1 Sym. stretch 1798.4 gas LF Karolczak, Harper, et al., 1995
2 Bend 783.0 gas LF Saito and Obi, 1993
Saito and Obi, 1994
Karolczak, Harper, et al., 1995

State:   X


Vib. 
sym. 
 No.   Approximate 
 type of mode 
 cm-1   Med.   Method   References

a1 1 Sym. stretch 1856 gas LF Smith, Clouthier, et al., 2000
1 Sym. stretch 1862.5 Ne IR Wang, Andrews, et al., 2002
1 Sym. stretch 1860.4 Ne IR Wang, Andrews, et al., 2002
1 Sym. stretch 1839.2 Ar IR Wang, Andrews, et al., 2002
1 Sym. stretch 1858.5 H2 IR Wang and Andrews, 2003
1 Sym. stretch 1854.5 H2 IR Wang and Andrews, 2003
2 Bend 916 gas LF Saito and Obi, 1993
Smith, Clouthier, et al., 2000
2 Bend 921.5 Ne IR Wang, Andrews, et al., 2002
2 Bend 913.6 Ar IR Wang, Andrews, et al., 2002
2 Bend 902.8 H2 IR Wang and Andrews, 2003
b2 3 Asym. stretch 1862.5 Ne IR Wang, Andrews, et al., 2002
3 Asym. stretch 1860.4 Ne IR Wang, Andrews, et al., 2002
3 Asym. stretch 1839.2 Ar IR Wang, Andrews, et al., 2002
3 Asym. stretch 1858.5 H2 IR Wang and Andrews, 2003
3 Asym. stretch 1854.5 H2 IR Wang and Andrews, 2003

Additional references: Jacox, 1994, page 20; Jacox, 1998, page 132; Jacox, 2003, page 18; Smith and Guillory, 1972; Lloret, Oria, et al., 1991

Notes

oEnergy separation between the v = 0 levels of the excited and electronic ground states.

References

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Vibrational and/or electronic energy levels, NIST Free Links, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Ruscic, Schwarz, et al., 1990
Ruscic, B.; Schwarz, M.; Berkowitz, J., Photoionization studies of GeHn(n = 2-4), J. Chem. Phys., 1990, 92, 1865. [all data]

Miller, Miller, et al., 1986
Miller, T.M.; Miller, A.E.S.; Lineberger, W.C., Electron Affinities of Ge and Sn, Phys. Rev. A, 1986, 33, 5, 3558, https://doi.org/10.1103/PhysRevA.33.3558 . [all data]

Saito and Obi, 1993
Saito, K.; Obi, K., The first observation of the à 1B1-X 1A1 transition of GeH2 and GeD2 radicals, Chem. Phys. Lett., 1993, 215, 1-3, 193, https://doi.org/10.1016/0009-2614(93)89287-R . [all data]

Saito and Obi, 1994
Saito, K.; Obi, K., The excited state dynamics of the Ã1B1 state of GeH2 and GeD2 radicals, Chem. Phys., 1994, 187, 3, 381, https://doi.org/10.1016/0301-0104(94)89020-X . [all data]

Karolczak, Harper, et al., 1995
Karolczak, J.; Harper, W.W.; Grev, R.S.; Clouthier, D.J., The structure, spectroscopy, and excited state predissociation dynamics of GeH2, J. Chem. Phys., 1995, 103, 8, 2839, https://doi.org/10.1063/1.470520 . [all data]

Campargue and Escribano, 1999
Campargue, A.; Escribano, R., Room temperature absorption spectroscopy of GeH2 near 585 nm, Chem. Phys. Lett., 1999, 315, 5-6, 397, https://doi.org/10.1016/S0009-2614(99)01237-3 . [all data]

Smith, Clouthier, et al., 2000
Smith, T.C.; Clouthier, D.J.; Sha, W.; Adam, A.G., Laser optogalvanic and jet spectroscopy of germylene (GeH[sub 2]): New spectroscopic data for an important semiconductor growth intermediate, J. Chem. Phys., 2000, 113, 21, 9567, https://doi.org/10.1063/1.1319936 . [all data]

Wang, Andrews, et al., 2002
Wang, X.; Andrews, L.; Kushto, G.P., Infrared Spectra of the Novel Ge, J. Phys. Chem. A, 2002, 106, 24, 5809, https://doi.org/10.1021/jp020219v . [all data]

Wang and Andrews, 2003
Wang, X.; Andrews, L., Infrared Spectra of Group 14 Hydrides in Solid Hydrogen: Experimental Observation of PbH, J. Am. Chem. Soc., 2003, 125, 21, 6581, https://doi.org/10.1021/ja029862l . [all data]

Jacox, 1994
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules, American Chemical Society, Washington, DC, 1994, 464. [all data]

Jacox, 1998
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules: supplement A, J. Phys. Chem. Ref. Data, 1998, 27, 2, 115-393, https://doi.org/10.1063/1.556017 . [all data]

Jacox, 2003
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules: supplement B, J. Phys. Chem. Ref. Data, 2003, 32, 1, 1-441, https://doi.org/10.1063/1.1497629 . [all data]

Smith and Guillory, 1972
Smith, G.R.; Guillory, W.A., Products of the Vacuum-Ultraviolet Photolysis of Germane Isolated in an Argon Matrix, J. Chem. Phys., 1972, 56, 4, 1423, https://doi.org/10.1063/1.1677383 . [all data]

Lloret, Oria, et al., 1991
Lloret, A.; Oria, M.; Seoudi, B.; Abouaf-Marguin, L., Infrared detection by the matrix-isolation technique of radicals produced in deposition plasmas: germane, Chem. Phys. Lett., 1991, 179, 4, 329, https://doi.org/10.1016/0009-2614(91)85161-O . [all data]


Notes

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