dichloroborane
- Formula: BCl2H
- Molecular weight: 82.725
- IUPAC Standard InChIKey: LHCGBIFHSCCRRG-UHFFFAOYSA-N
- CAS Registry Number: 10325-39-0
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Borane, dichloro-
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Gas phase thermochemistry data
Go To: Top, Gas phase ion energetics data, Vibrational and/or electronic energy levels, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -59.300 | kcal/mol | Review | Chase, 1998 | Data last reviewed in March, 1966 |
Quantity | Value | Units | Method | Reference | Comment |
S°gas,1 bar | 64.116 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in March, 1966 |
Gas Phase Heat Capacity (Shomate Equation)
Cp° = A + B*t + C*t2 + D*t3 +
E/t2
H° − H°298.15= A*t + B*t2/2 +
C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 −
E/(2*t2) + G
Cp = heat capacity (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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Temperature (K) | 298. to 1200. | 1200. to 6000. |
---|---|---|
A | 7.859030 | 18.85290 |
B | 21.21020 | 0.535331 |
C | -16.00730 | -0.103494 |
D | 4.571430 | 0.006924 |
E | -0.090950 | -1.846141 |
F | -62.75930 | -69.32299 |
G | 67.46291 | 80.83719 |
H | -59.30000 | -59.30000 |
Reference | Chase, 1998 | Chase, 1998 |
Comment | Data last reviewed in March, 1966 | Data last reviewed in March, 1966 |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, Vibrational and/or electronic energy levels, References, Notes
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 |
---|---|---|---|
11.91 ± 0.02 | PE | Frost, Kirby, et al., 1981 | LLK |
De-protonation reactions
BCl2- + =
By formula: BCl2- + H+ = HBCl2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 402. ± 24. | kcal/mol | Acid | Chase Jr., Curnutt, et al., 1982 | gas phase; Est: from IP,EA of isoelectronic NO2, BF2, AlF2. Calc G2: 1.47 eV Baeck, Choi, et al., 1999; B |
Vibrational and/or electronic energy levels
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Marilyn E. Jacox
State: X
Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
---|---|---|---|---|---|---|---|
a1 | 1 | BH stretch | 2616.9 | w | gas | IR | Lynds and Stern, 1959 Nadeau and Oaks, 1960 Myers and Putnam, 1963 Lynds and Bass, 1964 |
1 | BH stretch | 2625 | Ar | IR | Bass, Lynds, et al., 1964 | ||
2 | BCl2 s-stretch | 740 | T | gas | IR | Bass, Lynds, et al., 1964, 2 | |
b1 | 4 | OPLA | 784 | T | gas | IR | Bass, Lynds, et al., 1964, 2 |
4 | OPLA | 788 | Ar | IR | Bass, Lynds, et al., 1964 | ||
b2 | 5 | HBCl bend | 1089 | s | gas | IR | Lynds and Stern, 1959 Nadeau and Oaks, 1960 Myers and Putnam, 1963 Bass, Lynds, et al., 1964, 2 |
5 | HBCl bend | 1082.5 | Ar | IR | Bass, Lynds, et al., 1964 Miller and Andrews, 1980 | ||
6 | BCl2 a-stretch | 892 | s | gas | IR | Lynds and Stern, 1959 Nadeau and Oaks, 1960 Myers and Putnam, 1963 Bass, Lynds, et al., 1964, 2 | |
6 | BCl2 a-stretch | 886.3 | Ar | IR | Bass, Lynds, et al., 1964 Miller and Andrews, 1980 | ||
Additional references: Jacox, 1998, page 238; Sugie, Takeo, et al., 1994
Notes
w | Weak |
s | Strong |
T | Tentative assignment or approximate value |
References
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics 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.
Chase, 1998
Chase, M.W., Jr.,
NIST-JANAF Themochemical Tables, Fourth Edition,
J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]
Frost, Kirby, et al., 1981
Frost, D.C.; Kirby, C.; McDowell, C.A.; Westwood, N.P.C.,
Preparation and HeI photoelectron spectra of the dihaloboranes, HBX2 (X = Cl and Br),
J. Am. Chem. Soc., 1981, 103, 4428. [all data]
Chase Jr., Curnutt, et al., 1982
Chase Jr.; Curnutt, J.L.; Downy Jr.; McDonald, R.A.; Syverrud, A.N.; Valenzuela, E.A.,
JANAF Thermochemical Tables 1982 Supplement,
J. Phys. Chem. Ref. Data, 1982, 11, 3, 695, https://doi.org/10.1063/1.555666
. [all data]
Baeck, Choi, et al., 1999
Baeck, K.K.; Choi, H.; Iwata, S.,
Theoretical study on spectroscopic properties of positive, neutral, and negative species of BCl2 and AlCl2: The stability of the negative species,
J. Phys. Chem. A, 1999, 103, 34, 6772-6777, https://doi.org/10.1021/jp991072j
. [all data]
Lynds and Stern, 1959
Lynds, L.; Stern, D.R.,
None,
J. Am. Chem. Soc., 1959, 81, 18, 5006, https://doi.org/10.1021/ja01527a070
. [all data]
Nadeau and Oaks, 1960
Nadeau, H.G.; Oaks, D.M., Jr.,
Infrared Spectrophotometric Determination of Diborane (6), Dichloroborane, and Trichloroborane in Mixtures,
Analyt. Chem., 1960, 32, 11, 1480, https://doi.org/10.1021/ac60167a030
. [all data]
Myers and Putnam, 1963
Myers, H.W.; Putnam, R.F.,
On the Properties of Monochlorodiborane,
Inorg. Chem., 1963, 2, 3, 655, https://doi.org/10.1021/ic50007a067
. [all data]
Lynds and Bass, 1964
Lynds, L.; Bass, C.D.,
Infrared Spectrum of ν2 of Dichloroborane and Dichloroborane-d,
J. Chem. Phys., 1964, 40, 6, 1590, https://doi.org/10.1063/1.1725365
. [all data]
Bass, Lynds, et al., 1964
Bass, C.D.; Lynds, L.; Wolfram, T.; DeWames, R.E.,
Matrix Isolation Spectra of HBCl2 and DBCl2,
Inorg. Chem., 1964, 3, 7, 1063, https://doi.org/10.1021/ic50017a047
. [all data]
Bass, Lynds, et al., 1964, 2
Bass, C.D.; Lynds, L.; Wolfram, T.; DeWames, R.E.,
Vibrational Analysis of Substituted and Perturbed Molecules. II. Planar XY3 Molecules; Application to BCl3[Single Bond]HBCl2[Single Bond]DBCl2,
J. Chem. Phys., 1964, 40, 12, 3611, https://doi.org/10.1063/1.1725062
. [all data]
Miller and Andrews, 1980
Miller, J.H.; Andrews, L.,
Matrix photoionization and radiolysis of boron trihalides. Infrared and ultraviolet spectra of boron trichloride(1+) and boron tribromide(1+) and infrared spectra of boron dichloride and boron dibromide,
J. Am. Chem. Soc., 1980, 102, 15, 4900, https://doi.org/10.1021/ja00535a011
. [all data]
Jacox, 1998
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules: supplement A,
J. Phys. Chem. Ref. Data, 1998, 27, 2, 115-393, https://doi.org/10.1063/1.556017
. [all data]
Sugie, Takeo, et al., 1994
Sugie, M.; Takeo, H.; Matsumura, C.,
Spectrochim. Acta, 1994, 50A, 1379. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Vibrational and/or electronic energy levels, References
- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) ΔfH°gas Enthalpy of formation of gas at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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