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Methyl germane


Phase change 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: William E. Acree, Jr., James S. Chickos

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
21.4181.N/AAmberger and Boeters, 1961Based on data from 164. - 197. K.
16.6194.SGGriffiths and Onyszchuk, 1961Based on data from 159. - 230. K.

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

CH5Ge- + Hydrogen cation = CH6Ge

By formula: CH5Ge- + H+ = CH6Ge

Quantity Value Units Method Reference Comment
Deltar1537. ± 8.8kJ/molG+TSDecouzon, Gal, et al., 1993gas phase
Deltar1534. ± 8.8kJ/molG+TSGal, Decouzon, et al., 2001gas phase
Quantity Value Units Method Reference Comment
Deltar1503. ± 8.4kJ/molIMREDecouzon, Gal, et al., 1993gas phase
Deltar1501. ± 8.4kJ/molIMREGal, Decouzon, et al., 2001gas phase

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:
B - John E. Bartmess
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

Ionization energy determinations

IE (eV) Method Reference Comment
11.0PEDrake, Glavincevski, et al., 1979LLK
11.00PEDrake, Glavincevski, et al., 1979Vertical value; LLK

De-protonation reactions

CH5Ge- + Hydrogen cation = CH6Ge

By formula: CH5Ge- + H+ = CH6Ge

Quantity Value Units Method Reference Comment
Deltar1537. ± 8.8kJ/molG+TSDecouzon, Gal, et al., 1993gas phase; B
Deltar1534. ± 8.8kJ/molG+TSGal, Decouzon, et al., 2001gas phase; B
Quantity Value Units Method Reference Comment
Deltar1503. ± 8.4kJ/molIMREDecouzon, Gal, et al., 1993gas phase; B
Deltar1501. ± 8.4kJ/molIMREGal, Decouzon, et al., 2001gas phase; B

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: Takehiko Shimanouchi

Symmetry:   C3nu     Symmetry Number sigma = 3


 Sym.   No   Approximate   Selected Freq.  Infrared   Raman   Comments 
 Species   type of mode   Value   Rating   Value  Phase  Value  Phase

a1 1 CH3 s-str 2938  B 2937.8 S gas
a1 2 GeH3 s-str 2085  B 2084.8 S gas
a1 3 CH3 s-deform 1254  B 1254.1 M gas
a1 4 GeH3 s-deform 843  B 842.5 VS gas
a1 5 CGe str 602  B 601.6 VS gas
a2 6 Torsion 157  D  ia «nu»158.1«nu»A) MW. «nu»156.1«nu»E)
e 7 CH3 d-str 2997  B 2997.2 S gas
e 8 GeH3 d-str 2084  B 2084.3 S gas
e 9 CH3 d-deform 1428  C 1427.7 W gas
e 10 GeH3 d-deform 900  C 900.4 S gas
e 11 CH3 rock 848  C 847.5 S gas
e 12 GeH3 rock 506  C 505.9 S gas

Source: Shimanouchi, 1972

Notes

VSVery strong
SStrong
MMedium
WWeak
iaInactive
MWTorsional Frequency calculated from microwave spectroscopic data.
B1~3 cm-1 uncertainty
C3~6 cm-1 uncertainty
D6~15 cm-1 uncertainty

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.

Amberger and Boeters, 1961
Amberger, E.; Boeters, H., Darstellung der Methylchlorgermane, Angew. Chem., 1961, 73, 3, 114-114, https://doi.org/10.1002/ange.19610730309 . [all data]

Griffiths and Onyszchuk, 1961
Griffiths, J.E.; Onyszchuk, M., ORGANOGERMANIUM COMPOUNDS: PART I. THE INTERACTION OF HEXAMETHYLDIGERMOXANE AND TRIMETHYLMETHOXYGERMANE WITH BORON TRIFLUORIDE, Can. J. Chem., 1961, 39, 2, 339-347, https://doi.org/10.1139/v61-040 . [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]

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]

Drake, Glavincevski, et al., 1979
Drake, J.E.; Glavincevski, B.M.; Gorzelska, K., The photoelectron spectra of methylgermane, trifluoro- and trichloro-methylgermane, J. Electron Spectrosc. Relat. Phenom., 1979, 17, 73. [all data]

Shimanouchi, 1972
Shimanouchi, T., Tables of Molecular Vibrational Frequencies Consolidated Volume II, J. Phys. Chem. Ref. Data, 1972, 6, 3, 993-1102. [all data]


Notes

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