zirconium tetrafluoride


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
Δfsolid-1911.25kJ/molReviewChase, 1998Data last reviewed in June, 1975
Quantity Value Units Method Reference Comment
solid104.66J/mol*KReviewChase, 1998Data last reviewed in June, 1975

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. to 1400.
A 107.7292
B 47.06080
C -28.78115
D 9.510233
E -1.414556
F -1949.987
G 214.2405
H -1911.251
ReferenceChase, 1998
Comment Data last reviewed in June, 1975

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
Δsub240. ± 7.kJ/molAVGN/AAverage of 7 values; Individual data points

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 by: Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
ZrF+29.4 ± 0.5?EIMurad and Hildenbrand, 1966 
ZrF2+23.4 ± 0.5?EIMurad and Hildenbrand, 1966 
ZrF3+14.5 ± 0.5FEIMurad and Hildenbrand, 1966 
Zr+29.5 ± 0.5?EIMurad and Hildenbrand, 1966 

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]

Murad and Hildenbrand, 1966
Murad, E.; Hildenbrand, D.L., Mass-spectrometric study of the thermodynamic properties of Zr-F species, J. Chem. Phys., 1966, 45, 4751. [all data]


Notes

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