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niobium pentabromide


Gas 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.

Quantity Value Units Method Reference Comment
Deltafgas-106.02kcal/molReviewChase, 1998Data last reviewed in December, 1974
Quantity Value Units Method Reference Comment
gas,1 bar107.37cal/mol*KReviewChase, 1998Data last reviewed in December, 1974

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) 900. - 6000.
A 31.72251
B 0.063464
C -0.017499
D 0.001512
E -0.149889
F -115.9842
G 144.9008
H -106.0201
ReferenceChase, 1998
Comment Data last reviewed in December, 1974

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.

Quantity Value Units Method Reference Comment
Deltafliquid-130.27kcal/molReviewChase, 1998Data last reviewed in December, 1974
Quantity Value Units Method Reference Comment
liquid,1 bar65.488cal/mol*KReviewChase, 1998Data last reviewed in December, 1974
Quantity Value Units Method Reference Comment
Deltafsolid-132.90kcal/molReviewChase, 1998Data last reviewed in December, 1974
Quantity Value Units Method Reference Comment
solid61.850cal/mol*KReviewChase, 1998Data last reviewed in December, 1974

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.

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Temperature (K) 527. - 900.
A 47.26960
B 38.75956
C -76.69599
D 26.59895
E 0.243236
F -145.6702
G 112.5258
H -130.2758
ReferenceChase, 1998
Comment Data last reviewed in December, 1974

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.

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Temperature (K) 298. - 527.
A 35.35014
B -0.001209
C 0.002054
D -0.001214
E -0.000005
F -143.4398
G 104.6298
H -132.9001
ReferenceChase, 1998
Comment Data last reviewed in December, 1974

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
Deltasub27.5 ± 4.3kcal/molN/ATürler, Eichler, et al., 1996Based on data from 298. - 479. K.

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, 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]

Türler, Eichler, et al., 1996
Türler, A.; Eichler, B.; Jost, D.T.; Piguet, D.; Gäggeler, H.W.; Gregorich, K.E.; Kadkhodayan, B.; Kreek, S.A.; Lee, D.M.; Mohar, M.; Sylwester, E.; Hoffman, D.C.; Hübener, S., On-line Gas Phase Chromatography with Chlorides of Niobium and Hahnium (Element 105), Radiochimca Acta, 1996, 73, 2, 55-66, https://doi.org/10.1524/ract.1996.73.2.55 . [all data]


Notes

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