zirconium tetrachloride

• Formula: Cl₄Zr
• Molecular weight: 233.036
• CAS Registry Number: 10026-11-6
• Information on this page:
  • Gas phase thermochemistry data
  • Phase change data
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • Condensed phase thermochemistry data
  • Vibrational and/or electronic energy levels
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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.

Gas Phase Heat Capacity (Shomate Equation)

C_p° = 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
    C_p = heat capacity (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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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 as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos

Antoine Equation Parameters

log₁₀(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

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Enthalpy of sublimation

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: Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

Ionization energy determinations

Appearance energy determinations

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]

Denisova, Safronova, et al., 1967
Denisova, N.D.; Safronova, E.K.; Pustil'nik, A.I.; Bystrova, O.N., Boundary Liqui-Vapor Curve and Saturated Vapour Pressure of Zirconium and Hafnium Tetrachlorides, Russ. J. Phys. Chem. (Engl. Transl.), 1967, 41, 30. [all data]

Nisel'son, Stolyarov, et al., 1965
Nisel'son, L.A.; Stolyarov, V.I.; Sokolova, T.D., Some Properties of Liquid Zirconium Tetrachloride, Russ. J. Phys. Chem. (Engl. Transl.), 1965, 39, 1614. [all data]

Stull, 1947
Stull, Daniel R., Vapor Pressure of Pure Substances. Organic and Inorganic Compounds, Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 . [all data]

Tangri and Bose, 1994
Tangri, R.P.; Bose, D.K., Vapour pressure measurement of zirconium chloride and hafnium chloride by the transpiration technique, Thermochimica Acta, 1994, 244, 249-256, https://doi.org/10.1016/0040-6031(94)80224-6 . [all data]

Egdell and Orchard, 1978
Egdell, R.G.; Orchard, A.F., Photoelectron spectra of the group IVA halides, J. Chem. Soc. Faraday Trans. 2, 1978, 74, 485. [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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• Symbols used in this document:
  

  AE	Appearance energy
  Pc	Critical pressure
  S°gas,1 bar	Entropy of gas at standard conditions (1 bar)
  Tc	Critical temperature
  Vc	Critical volume
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  ΔsubH	Enthalpy of sublimation

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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