Home Symbol which looks like a small house Up Solid circle with an upward pointer in it

boron


Gas phase thermochemistry data

Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, 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
Deltafgas135. ± 1.kcal/molReviewCox, Wagman, et al., 1984CODATA Review value
Deltafgas133.84kcal/molReviewChase, 1998Data last reviewed in June, 1983
Quantity Value Units Method Reference Comment
gas,1 bar36.6721 ± 0.0036cal/mol*KReviewCox, Wagman, et al., 1984CODATA Review value
gas,1 bar36.673cal/mol*KReviewChase, 1998Data last reviewed in June, 1983

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.

View plot Requires a JavaScript / HTML 5 canvas capable browser.

View table.

Temperature (K) 4137.895 - 6000.
A 4.935930
B 0.054117
C -0.026847
D 0.004037
E 0.002083
F 132.3770
G 42.64290
H 133.8430
ReferenceChase, 1998
Comment Data last reviewed in June, 1983

Condensed phase thermochemistry data

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, 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
Deltafliquid11.69kcal/molReviewChase, 1998Data last reviewed in June, 1983
Quantity Value Units Method Reference Comment
liquid,1 bar6.343cal/mol*KReviewChase, 1998Data last reviewed in June, 1983
Quantity Value Units Method Reference Comment
solid,1 bar1.41 ± 0.02cal/mol*KReviewCox, Wagman, et al., 1984 rhombic phase; CODATA Review value

Liquid 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.

View plot Requires a JavaScript / HTML 5 canvas capable browser.

View table.

Temperature (K) 2350. - 4137.895
A 7.588440
B 6.109410×10-8
C -1.543211×10-8
D 1.342410×10-9
E 6.467422×10-8
F 6.678311
G 11.22070
H 11.69380
ReferenceChase, 1998
Comment Data last reviewed in June, 1983

Solid 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.

View plot Requires a JavaScript / HTML 5 canvas capable browser.

View table.

Temperature (K) 298. - 1800.1800. - 2350.
A 2.4344516.005412
B 6.9895200.472154
C -4.3072110.080878
D 1.006771-0.009568
E -0.131692-0.629918
F -1.442711-3.450280
G 1.6943316.118380
H 0.0000000.000000
ReferenceChase, 1998Chase, 1998
Comment «beta»-rhombohedral phase; Data last reviewed in June, 1983 «beta»-rhombohedral phase; Data last reviewed in June, 1983

Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry 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 as indicated in comments:
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
B - 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

(B+ bullet 10boron) + boron = (B+ bullet 11boron)

By formula: (B+ bullet 10B) + B = (B+ bullet 11B)

Quantity Value Units Method Reference Comment
Deltar127. ± 12.kcal/molCIDHanley, Whitten, et al., 1988gas phase; «DELTA»rH<; M

(B+ bullet 11boron) + boron = (B+ bullet 12boron)

By formula: (B+ bullet 11B) + B = (B+ bullet 12B)

Quantity Value Units Method Reference Comment
Deltar184. ± 35.kcal/molCIDHanley, Whitten, et al., 1988gas phase; «DELTA»rH<; M

(B+ bullet 9boron) + boron = (B+ bullet 10boron)

By formula: (B+ bullet 9B) + B = (B+ bullet 10B)

Quantity Value Units Method Reference Comment
Deltar129. ± 18.kcal/molCIDHanley, Whitten, et al., 1988gas phase; «DELTA»rH<; M

(B+ bullet 2boron) + boron = (B+ bullet 3boron)

By formula: (B+ bullet 2B) + B = (B+ bullet 3B)

Quantity Value Units Method Reference Comment
Deltar185. ± 35.kcal/molCIDHanley, Whitten, et al., 1988gas phase; «DELTA»rH<; M

(B+ bullet 3boron) + boron = (B+ bullet 4boron)

By formula: (B+ bullet 3B) + B = (B+ bullet 4B)

Quantity Value Units Method Reference Comment
Deltar164. ± 14.kcal/molCIDHanley, Whitten, et al., 1988gas phase; «DELTA»rH<; M

(B+ bullet 5boron) + boron = (B+ bullet 6boron)

By formula: (B+ bullet 5B) + B = (B+ bullet 6B)

Quantity Value Units Method Reference Comment
Deltar127. ± 16.kcal/molCIDHanley, Whitten, et al., 1988gas phase; «DELTA»rH<; M

(B+ bullet 8boron) + boron = (B+ bullet 9boron)

By formula: (B+ bullet 8B) + B = (B+ bullet 9B)

Quantity Value Units Method Reference Comment
Deltar125. ± 12.kcal/molCIDHanley, Whitten, et al., 1988gas phase; «DELTA»rH<; M

(B+ bullet 4boron) + boron = (B+ bullet 5boron)

By formula: (B+ bullet 4B) + B = (B+ bullet 5B)

Quantity Value Units Method Reference Comment
Deltar62. ± 14.kcal/molCIDHanley, Whitten, et al., 1988gas phase; «DELTA»rH<; M

(B+ bullet 6boron) + boron = (B+ bullet 7boron)

By formula: (B+ bullet 6B) + B = (B+ bullet 7B)

Quantity Value Units Method Reference Comment
Deltar97. ± 12.kcal/molCIDHanley, Whitten, et al., 1988gas phase; «DELTA»rH<; M

(B+ bullet 7boron) + boron = (B+ bullet 8boron)

By formula: (B+ bullet 7B) + B = (B+ bullet 8B)

Quantity Value Units Method Reference Comment
Deltar92. ± 12.kcal/molCIDHanley, Whitten, et al., 1988gas phase; «DELTA»rH<; M

(B+ bullet boron) + boron = (B+ bullet 2boron)

By formula: (B+ bullet B) + B = (B+ bullet 2B)

Quantity Value Units Method Reference Comment
Deltar99. ± 16.kcal/molCIDHanley, Whitten, et al., 1988gas phase; «DELTA»rH<; M

(CAS Reg. No. 12513-02-9 bullet 4294967295boron) + boron = CAS Reg. No. 12513-02-9

By formula: (CAS Reg. No. 12513-02-9 bullet 4294967295B) + B = CAS Reg. No. 12513-02-9

Quantity Value Units Method Reference Comment
Deltar216.4 ± 2.9kcal/molN/AWenthold, Kim, et al., 1997gas phase; B

B+ + boron = (B+ bullet boron)

By formula: B+ + B = (B+ bullet B)

Quantity Value Units Method Reference Comment
Deltar18. ± 14.kcal/molCIDHanley, Whitten, et al., 1988gas phase; «DELTA»rH<; M

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Cox, Wagman, et al., 1984
Cox, J.D.; Wagman, D.D.; Medvedev, V.A., CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, 1984, 1. [all data]

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

Hanley, Whitten, et al., 1988
Hanley, L.; Whitten, J.L.; Anderson, S.L., Collision - Induced Dissociation and ab initio Studies of Boron Cluster Ions. Determination of Structures and Stabilities, J. Phys. Chem., 1988, 92, 20, 5803, https://doi.org/10.1021/j100331a052 . [all data]

Wenthold, Kim, et al., 1997
Wenthold, P.G.; Kim, J.B.; Jonas, K.-L.; Lineberger, W.C., An Experimental and Computational Study of the Electron Affinity of Boron Oxide, J. Phys. Chem. A, 1997, 101, 24, 4472, https://doi.org/10.1021/jp970645u . [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, References