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niobium pentachloride


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-703.33kJ/molReviewChase, 1998Data last reviewed in December, 1974
Quantity Value Units Method Reference Comment
gas,1 bar404.07J/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 (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 800. - 6000.
A 131.8940
B 0.990980
C -0.272647
D 0.023520
E -1.186221
F -746.6850
G 556.7280
H -703.3300
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-773.35kJ/molReviewChase, 1998Data last reviewed in December, 1974
Quantity Value Units Method Reference Comment
liquid,1 bar260.97J/mol*KReviewChase, 1998Data last reviewed in December, 1974
Quantity Value Units Method Reference Comment
Deltafsolid-797.47kJ/molReviewChase, 1998Data last reviewed in December, 1974
Quantity Value Units Method Reference Comment
solid214.05J/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 (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 478.9 - 800.
A 241.2590
B -5.524870
C -85.62220
D -2.629081
E -0.052983
F -848.7050
G 544.9610
H -773.3540
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 (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 298. - 478.9
A 147.9040
B 0.000105
C -0.000220
D 0.000148
E 1.052271×10-7
F -841.5680
G 393.0410
H -797.4700
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
Deltasub95. ± 16.kJ/molN/ATürler, Eichler, et al., 1996 

Gas phase ion energetics 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:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Ionization energy determinations

IE (eV) Method Reference Comment
10.97PEEgdell and Orchard, 1978LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
ClNb+24.2?EIPreiss, 1972LLK
NbCl+22.8 ± 0.5?EIKiser, Dillard, et al., 1969RDSH
Cl2Nb+19.5?EIPreiss, 1972LLK
NbCl2+18.8 ± 0.3?EIKiser, Dillard, et al., 1969RDSH
NbCl2+20. ± 1.?EIKencshea and Cubicciotti, 1969RDSH
Cl3Nb+14.6?EIPreiss, 1972LLK
NbCl3+14.9 ± 0.8?EIKencshea and Cubicciotti, 1969RDSH
Cl4Nb+10.7?EIPreiss, 1972LLK
NbCl4+11.34 ± 0.22ClEIKiser, Dillard, et al., 1969RDSH
NbCl4+11.6 ± 0.8ClEIKencshea and Cubicciotti, 1969RDSH
Nb+28.0 ± 0.7?EIKiser, Dillard, et al., 1969RDSH

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.

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]

Egdell and Orchard, 1978
Egdell, R.G.; Orchard, A.F., Photoelectron spectra of some transition metal pentachlorides, J. Electron Spectrosc. Relat. Phenom., 1978, 14, 277. [all data]

Preiss, 1972
Preiss, H., Massenspektrometrische Untersuchungen an einigen Halogeniden der 5. Haupt- und Nebengruppe, Z. Anorg. Allg. Chem., 1972, 389, 280. [all data]

Kiser, Dillard, et al., 1969
Kiser, R.W.; Dillard, J.G.; Dugger, D.L., Mass spectrometry of inorganic halides, Advan. Chem. Ser., 1969, 72, 153. [all data]

Kencshea and Cubicciotti, 1969
Kencshea, F.J.; Cubicciotti, D., The thermodynamic properties of gaseous niobium chlorides, J. Phys. Chem., 1969, 73, 3054. [all data]


Notes

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