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Germane


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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias

Data compiled as indicated in comments:
B - John E. Bartmess
LL - Sharon G. Lias and Joel F. Liebman
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Quantity Value Units Method Reference Comment
Proton affinity (review)713.4kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity687.1kJ/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
<=10.53PIRuscic, Schwarz, et al., 1990LL
11.31PEPullen, Carlson, et al., 1970RDSH
11.34PEPotts and Price, 1972Vertical value; LLK
12.0PECradock, 1971Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
Ge+10.7 ± 0.22H2EISaalfeld and Svec, 1963RDSH
GeH+<=12.9H2+HPIRuscic, Schwarz, et al., 1990LL
GeH+11.3 ± 0.3H2+HEISaalfeld and Svec, 1963RDSH
GeH2+<=10.772 ± 0.009H2PIRuscic, Schwarz, et al., 1990LL
GeH2+11.8 ± 0.2H2EISaalfeld and Svec, 1963RDSH
GeH3+<=11.66 ± 0.01HPIRuscic, Schwarz, et al., 1990LL
GeH3+10.80 ± 0.07HEISaalfeld and Svec, 1963RDSH

De-protonation reactions

H3Ge- + Hydrogen cation = Germane

By formula: H3Ge- + H+ = H4Ge

Quantity Value Units Method Reference Comment
Deltar1501. ± 8.8kJ/molG+TSGal, Decouzon, et al., 2001gas phase; B
Deltar1502. ± 5.4kJ/molG+TSDecouzon, Gal, et al., 1993gas phase; The neutral acid «DELTA»Hf may be ca. 4 kcal/mol too positive: G2 calculations, Mayer, Gal, et al., 1997; B
Deltar>1490. ± 11.kJ/molD-EAReed and Brauman, 1974gas phase; B
Deltar1514.6kJ/molN/ACheck, Faust, et al., 2001gas phase; Fe(CO)-(q); ; «DELTA»S(EA)=5.0; B
Quantity Value Units Method Reference Comment
Deltar1467. ± 8.4kJ/molIMREGal, Decouzon, et al., 2001gas phase; B
Deltar1468. ± 5.0kJ/molIMREDecouzon, Gal, et al., 1993gas phase; The neutral acid «DELTA»Hf may be ca. 4 kcal/mol too positive: G2 calculations, Mayer, Gal, et al., 1997; B
Deltar>1456. ± 12.kJ/molH-TSReed and Brauman, 1974gas phase; B
Deltar1480.7kJ/molN/ACheck, Faust, et al., 2001gas phase; Fe(CO)-(q); ; «DELTA»S(EA)=5.0; B

References

Go To: Top, Gas phase ion energetics data, Notes

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

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

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]

Pullen, Carlson, et al., 1970
Pullen, B.P.; Carlson, T.A.; Moddeman, W.E.; Schweitzer, G.K.; Bull, W.E., Photoelectron spectra of methane, silane, germane, methyl fluoride, difluoromethane, and trifluoromethane, J. Chem. Phys., 1970, 53, 768. [all data]

Potts and Price, 1972
Potts, A.W.; Price, W.C., The photoelectron spectra of methane, silane germane and stannane, Proc. R. Soc. London A:, 1972, 165. [all data]

Cradock, 1971
Cradock, S., The photoelectron spectra of GeH4 and GeF4, Chem. Phys. Lett., 1971, 10, 291. [all data]

Saalfeld and Svec, 1963
Saalfeld, F.E.; Svec, H.J., The mass spectra of volatile hydrides. I. The monoelemental hydrides of the group IVB and VB elements, Inorg. Chem., 1963, 2, 46. [all data]

Gal, Decouzon, et al., 2001
Gal, J.F.; Decouzon, M.; Maria, P.C.; Gonzalez, A.I.; Mo, O.; Yanez, M.; El Chaouch, S.; Guillemin, J.C., Acidity trends in alpha,beta-unsaturated alkanes, silanes, germanes, and stannanes, J. Am. Chem. Soc., 2001, 123, 26, 6353-6359, https://doi.org/10.1021/ja004079j . [all data]

Decouzon, Gal, et al., 1993
Decouzon, M.; Gal, J.F.; Gayraud, J.; Maria, P.C.; Vaglio, G.A.; Volpe, P., Fourier Transform-Ion Cyclotron Resonance Study of the Gas-Phase Acidities of Germane and Methylgermane - Bond Dissociation Energy of German, J. Am. Soc. Mass Spectrom., 1993, 4, 1, 54, https://doi.org/10.1016/1044-0305(93)85042-V . [all data]

Mayer, Gal, et al., 1997
Mayer, P.M.; Gal, J.-F.; Radom, L., The Heats of Formation, Gas-phase Acidities, and Related Thermochemical Properties of the Third-row Hydrides GeH4, AsH3, SeH2, and HBr from G2 ab initio Calculations, Int. J. Mass Spectrom. Ion Proc., 1997, 167/168, 689, https://doi.org/10.1016/S0168-1176(97)00127-4 . [all data]

Reed and Brauman, 1974
Reed, K.J.; Brauman, J.I., Photodetachment of electrons from Group IVa binary hydride anions: The electron affinities of the SiH3 and GeH3 radicals, J. Chem. Phys., 1974, 61, 4830. [all data]

Check, Faust, et al., 2001
Check, C.E.; Faust, T.O.; Bailey, J.M.; Wright, B.J.; Gilbert, T.M.; Sunderlin, L.S., Addition of Polarization and Diffuse Functions to the LANL2DZ Basis Set for P-Block Elements, J. Phys. Chem. A,, 2001, 105, 34, 8111, https://doi.org/10.1021/jp011945l . [all data]


Notes

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