Trimethylamine, compd. with borane (1:1)
- Formula: C3H12BN
- Molecular weight: 72.945
- 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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Condensed phase 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: Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
S°solid,1 bar | 169.58 | J/mol*K | N/A | Finke, Todd, et al., 1970 | crystaline, III phase |
Constant pressure heat capacity of solid
Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
173.76 | 298.15 | Finke, Todd, et al., 1970 | crystaline, III phase; T = 12 to 390 K. |
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, 2 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.02 K; TRC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
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Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
136. to 194.3 | 4.33875 | 826.224 | -19.27 | Burg and Schlesinger, 1937 | Coefficents calculated by NIST from author's data. |
Enthalpy of sublimation
ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
57.0 | 311. | A | Stephenson and Malanowski, 1987 | Based on data from 296. to 367. K. See also Burg and Schlesinger, 1937.; AC |
56.9 ± 0.8 | 273. to 363. | ME | Alton, Brown, et al., 1959 | AC |
Enthalpy of phase transition
ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
2.535 | 350.1 | crystaline, III | crystaline, II | Finke, Todd, et al., 1970 | DH |
0.594 | 360.4 | crystaline, II | crystaline, I | Finke, Todd, et al., 1970 | DH |
4.9472 | 368.70 | crystaline, I | liquid | Finke, Todd, et al., 1970 | DH |
Entropy of phase transition
ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
7.24 | 350.1 | crystaline, III | crystaline, II | Finke, Todd, et al., 1970 | DH |
16.48 | 360.4 | crystaline, II | crystaline, I | Finke, Todd, et al., 1970 | DH |
13.42 | 368.70 | crystaline, I | liquid | Finke, Todd, et al., 1970 | DH |
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
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
C3H11BN- + =
By formula: C3H11BN- + H+ = C3H12BN
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1645. ± 8.8 | kJ/mol | G+TS | Ren, Workman, et al., 1998 | gas phase; Acid heat est. from B-N bond strength of "35-40 kcal/mol" in Ren, Workman, et al., 1998 |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1607. ± 8.4 | kJ/mol | IMRB | Ren, Workman, et al., 1998 | gas phase; Acid heat est. from B-N bond strength of "35-40 kcal/mol" in Ren, Workman, et al., 1998 |
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.
Finke, Todd, et al., 1970
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]
Finke, Todd, et al., 1970, 2
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]
Ren, Workman, et al., 1998
Ren, J.H.; Workman, D.B.; Squires, R.R.,
Gas-phase negative ion chemistry of Lewis acid-base complexes,
J. Am. Chem. Soc., 1998, 120, 40, 10511-10522, https://doi.org/10.1021/ja9804518
. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid S°solid,1 bar Entropy of solid at standard conditions (1 bar) Ttriple Triple point temperature ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔsubH Enthalpy of sublimation - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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