germanium tetrabromide
- Formula: Br4Ge
- Molecular weight: 392.26
- CAS Registry Number: 13450-92-5
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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 |
|---|---|---|---|---|---|
| ΔvapH° | 46.6 ± 0.3 | kJ/mol | N/A | Zelenina, Chusova, et al., 2004 | Based on data from 299. to 373. K. |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔsubH° | 58.6 ± 1.2 | kJ/mol | N/A | Zelenina, Chusova, et al., 2004 | Based on data from 273. to 299. K. |
Enthalpy of fusion
| ΔfusH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 12.85 | 299.3 | AC | Berezovskii, Zelenina, et al., 1999 | Based on data from 5. to 315. K. |
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 σ = 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
| C | 3~6 cm-1 uncertainty |
References
Go To: Top, Phase change data, Vibrational and/or electronic energy levels, 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]
Shimanouchi, 1972
Shimanouchi, T.,
Tables of Molecular Vibrational Frequencies Consolidated Volume I, National Bureau of Standards, 1972, 1-160. [all data]
Notes
Go To: Top, Phase change data, Vibrational and/or electronic energy levels, References
- Symbols used in this document:
ΔfusH Enthalpy of fusion ΔsubH° Enthalpy of sublimation at standard conditions ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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