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germanium tetrabromide


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

Quantity Value Units Method Reference Comment
Deltavap11.1 ± 0.07kcal/molN/AZelenina, Chusova, et al., 2004Based on data from 299. - 373. K.
Quantity Value Units Method Reference Comment
Deltasub14.0 ± 0.29kcal/molN/AZelenina, Chusova, et al., 2004Based on data from 273. - 299. K.

Enthalpy of fusion

DeltafusH (kcal/mol) Temperature (K) Method Reference Comment
3.071299.3ACBerezovskii, Zelenina, et al., 1999Based on data from 5. - 315. K.

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
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Ionization energy determinations

IE (eV) Method Reference Comment
10.62 ± 0.04PICreasey, Lambert, et al., 1991LL
10.75PEGreen, Green, et al., 1970RDSH
10.8 ± 0.3EIUy, Muenow, et al., 1969RDSH

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
Br+22.3 ± 0.6?PICreasey, Lambert, et al., 1991LL
Br+22. ± 1.?EIUy, Muenow, et al., 1969RDSH
BrGe+13.6 ± 0.1?PICreasey, Lambert, et al., 1991LL
GeBr+15. ± 1.?EIUy, Muenow, et al., 1969RDSH
Br2+19.5 ± 0.5?EIUy, Muenow, et al., 1969RDSH
GeBr2+15. ± 1.?EIUy, Muenow, et al., 1969RDSH
Br3Ge+10.97 ± 0.04BrPICreasey, Lambert, et al., 1991LL
GeBr3+11.0 ± 0.3BrEIUy, Muenow, et al., 1969RDSH
Ge+21.4 ± 0.5?PICreasey, Lambert, et al., 1991LL
Ge+20. ± 1.?EIUy, Muenow, et al., 1969RDSH

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:   Td     Symmetry Number sigma = 12


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

a1 1 Sym str 235  C 235 liq.
e 2 Deg deform 79  C 79 liq.
f2 3 Deg str 327  C 327 liq.
f2 4 Deg deform 112  C 112 liq.

Source: Shimanouchi, 1972

Notes

C3~6 cm-1 uncertainty

References

Go To: Top, Phase change 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.

Zelenina, Chusova, et al., 2004
Zelenina, L.N.; Chusova, T.P.; Stenin, Yu.G., Zh. Fiz. Khim., 2004, 78, 4, 598. [all data]

Berezovskii, Zelenina, et al., 1999
Berezovskii, G.A.; Zelenina, L.N.; Chusova, T.P.; Paukov, I.E., Thermodynamic functions of germanium tetrabromide in temperature interval 5-315 K, Zh. Fiz. Khim., 1999, 73, 8, 1504. [all data]

Creasey, Lambert, et al., 1991
Creasey, J.C.; Lambert, I.R.; Tuckett, R.P.; Codling, K.; Leszek, J.F.; Hatherly, P.A.; Stankiewicz, M., Photoionization mass-spectrometric study of fragmentation of SiBr4 and GeBr4 in the range 400-1220 A, J. Chem. Soc. Faraday Trans., 1991, 87, 3717. [all data]

Green, Green, et al., 1970
Green, J.C.; Green, M.L.H.; Joachim, P.J.; Orchard, A.F.; Turner, D.W., A study of the bonding in the group IV tetrahalides by photoelectron spectroscopy, Phil. Trans. Roy. Soc. (London), 1970, A268, III. [all data]

Uy, Muenow, et al., 1969
Uy, O.M.; Muenow, D.W.; Margrave, J.L., Mass spectrometric studies at high temperatures. Part 35. Stabilities of gaseous GeCl2 and GeBr2, J. Chem. Soc. Faraday Trans., 1969, 65, 1296. [all data]

Shimanouchi, 1972
Shimanouchi, T., Tables of Molecular Vibrational Frequencies Consolidated Volume I, National Bureau of Standards, 1972, 1-160. [all data]


Notes

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