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tantalum 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-182.80kcal/molReviewChase, 1998Data last reviewed in December, 1974
Quantity Value Units Method Reference Comment
gas,1 bar98.695cal/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) 800. - 6000.
A 31.57240
B 0.190412
C -0.051649
D 0.004411
E -0.262204
F -193.1010
G 135.3730
H -182.8000
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-199.41kcal/molReviewChase, 1998Data last reviewed in December, 1974
Quantity Value Units Method Reference Comment
liquid,1 bar64.087cal/mol*KReviewChase, 1998Data last reviewed in December, 1974
Quantity Value Units Method Reference Comment
Deltafsolid-205.30kcal/molReviewChase, 1998Data last reviewed in December, 1974
Quantity Value Units Method Reference Comment
solid53.000cal/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) 489.7 - 800.
A 57.95031
B -2.329410
C -19.17120
D -1.204201
E -0.021377
F -217.5040
G 132.5100
H -199.4140
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. - 489.7
A 35.34990
B 0.000000
C 0.000000
D 0.000000
E 0.000000
F -215.8400
G 95.77911
H -205.3000
ReferenceChase, 1998
Comment Data last reviewed in December, 1974

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
11.08PEEgdell and Orchard, 1978LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
TaCl+25.0 ± 0.5?EIKiser, Dillard, et al., 1969RDSH
Cl2Ta+20.3?EIPreiss, 1972LLK
TaCl2+19.6 ± 0.6?EIKiser, Dillard, et al., 1969RDSH
Cl3Ta+15.2?EIPreiss, 1972LLK
TaCl3+15.0 ± 0.4?EIKiser, Dillard, et al., 1969RDSH
Cl4Ta+10.9?EIPreiss, 1972LLK
TaCl4+12.0 ± 0.28ClEIKiser, Dillard, et al., 1969RDSH
Ta+29.5 ± 0.4?EIKiser, Dillard, et al., 1969RDSH

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Gas phase ion energetics data, NIST Free Links, 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]

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]

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]

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


Notes

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