Trimethylamine, compd. with borane (1:1)
- Formula: C3H12BN
- Molecular weight: 72.945
- IUPAC Standard InChI: InChI=1S/C3H12BN/c1-5(2,3)4/h1-4H3
- IUPAC Standard InChIKey: KQVSXUGMDCAISO-UHFFFAOYSA-N
- CAS Registry Number: 75-22-9
- Chemical structure:
This structure is also available as a 2d Mol file - Species with the same structure:
- Other names: Boron, (N,N-dimethylmethanamine)trihydro-, (T-4)-; Trimethylamine borane; (CH3)3NBH3; Borane-trimethylamine complex; Borane-trimethylamine (1:1); Methanamine, N,N-dimethyl-, compd. with borane (1:1); Borane, compd. with N,N-dimethylmethanamine (1:1); Borane, compd. with trimethylamine (1:1); TMAB; NSC 10220; trimethylamine--borane (1:1); Boron, (N,N-dimethylmethanamine)trihydro-
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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 as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Ttriple | 368.70 | K | N/A | Finke, Todd, et al., 1970 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.02 K; TRC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (atm)
T = temperature (K)
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| Temperature (K) | A | B | C | Reference | Comment |
|---|---|---|---|---|---|
| 136. to 194.3 | 4.33304 | 826.224 | -19.27 | Burg and Schlesinger, 1937 | Coefficents calculated by NIST from author's data. |
Enthalpy of sublimation
| ΔsubH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 13.6 | 311. | A | Stephenson and Malanowski, 1987 | Based on data from 296. to 367. K. See also Burg and Schlesinger, 1937.; AC |
| 13.6 ± 0.2 | 273. to 363. | ME | Alton, Brown, et al., 1959 | AC |
Enthalpy of phase transition
| ΔHtrs (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 0.6059 | 350.1 | crystaline, III | crystaline, II | Finke, Todd, et al., 1970, 2 | DH |
| 0.142 | 360.4 | crystaline, II | crystaline, I | Finke, Todd, et al., 1970, 2 | DH |
| 1.1824 | 368.70 | crystaline, I | liquid | Finke, Todd, et al., 1970, 2 | DH |
Entropy of phase transition
| ΔStrs (cal/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 1.73 | 350.1 | crystaline, III | crystaline, II | Finke, Todd, et al., 1970, 2 | DH |
| 3.939 | 360.4 | crystaline, II | crystaline, I | Finke, Todd, et al., 1970, 2 | DH |
| 3.207 | 368.70 | crystaline, I | liquid | Finke, Todd, et al., 1970, 2 | DH |
References
Go To: Top, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Finke, Todd, et al., 1970
Finke, H.L.; Todd, S.S.; Messerly, J.F.,
Trimethylamineborane and Triethylamineborane: Low-temperature Thermodynamic Properties,
J. Chem. Thermodyn., 1970, 2, 129. [all data]
Burg and Schlesinger, 1937
Burg, Anton B.; Schlesinger, H.I.,
Hydrides of Boron. VII. Evidence of the Transitory Existence of Borine (BH 3 ): Borine Carbonyl and Borine Trimethylammine,
J. Am. Chem. Soc., 1937, 59, 5, 780-787, https://doi.org/10.1021/ja01284a002
. [all data]
Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw,
Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2
. [all data]
Alton, Brown, et al., 1959
Alton, E.R.; Brown, R.D.; Carter, J.C.; Taylor, R.C.,
Vapor Pressures of the Methylamine-Boranes and Ammonia-Triborane 1,
J. Am. Chem. Soc., 1959, 81, 14, 3550-3551, https://doi.org/10.1021/ja01523a016
. [all data]
Finke, Todd, et al., 1970, 2
Finke, H.L.; Todd, S.S.; Messerly, J.F.,
Trimethylamineborane and triethylamineborane: low-temperature thermodynamic properties,
J. Chem. Thermodynam., 1970, 2, 129-138. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Ttriple Triple point temperature ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔsubH Enthalpy of sublimation - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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