mercury chloride


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
Δfgas78.45kJ/molReviewChase, 1998Data last reviewed in December, 1961
Quantity Value Units Method Reference Comment
gas,1 bar260.00J/mol*KReviewChase, 1998Data last reviewed in December, 1961

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) 298. to 6000.
A 37.36504
B 0.854850
C -0.011692
D 0.001004
E -0.107381
F 66.91178
G 304.3622
H 78.45000
ReferenceChase, 1998
Comment Data last reviewed in December, 1961

Constants of diatomic molecules

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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: Klaus P. Huber and Gerhard H. Herzberg

Data collected through January, 1975

Symbols used in the table of constants
SymbolMeaning
State electronic state and / or symmetry symbol
Te minimum electronic energy (cm-1)
ωe vibrational constant – first term (cm-1)
ωexe vibrational constant – second term (cm-1)
ωeye vibrational constant – third term (cm-1)
Be rotational constant in equilibrium position (cm-1)
αe rotational constant – first term (cm-1)
γe rotation-vibration interaction constant (cm-1)
De centrifugal distortion constant (cm-1)
βe rotational constant – first term, centrifugal force (cm-1)
re internuclear distance (Å)
Trans. observed transition(s) corresponding to electronic state
ν00 position of 0-0 band (units noted in table)
Diatomic constants for (202)Hg35Cl
StateTeωeωexeωeyeBeαeγeDeβereTrans.ν00
D (2Π3/2) 39703.5 341.8 HQ 1.87        D ↔ X V 39727.7 HQ
Wieland, 1929; missing citation; missing citation; missing citation
C (2Π1/2) (35782) (383) 1         C ↔ X (V) 35828
Wieland, 1929; Wieland, 1932; missing citation; missing citation; Wieland, 1941; Howell, 1944; Wieland, 1948; Krishnamurthy, 1958; missing citation
B 2Σ+ 23421.0 192.0 2 H 0.50 2        B → X RV 23371.0 H
Wieland, 1929; Wieland, 1932; missing citation; missing citation; Wieland, 1948, 2
X 2Σ+ 0 292.61 H 1.6025 3       [(2.23)] 4  

Notes

1From the absorption spectrum Horne, Gosavi, et al., 1968.
2For v ≥ 30: ωe = 186.2, ωexe = 0.40.
3ωeze = -0.000033. All constants refer to R heads of B-X. From Q heads of D-X ωe = 293.4, ωexe = 1.82.
4From electron diffraction data Maxwell and Mosley, 1940; according to Wieland, 1941 more likely corresponding to the Hg-Cl separation in HgCl2 than in HgCl.

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]

Wieland, 1929
Wieland, K., Bandenspektren der quecksilber-, cadmium- und zinkhalogenide, Helv. Phys. Acta, 1929, 2, 46. [all data]

Wieland, 1932
Wieland, K., Absorptions- und fluoreszenzspektren dampfformiger quecksilberhalogenide. II. HgBr2 und HgCl2, Z. Phys., 1932, 77, 157. [all data]

Wieland, 1941
Wieland, K., Das langwellige emissions- und fluoreszenzspektrum (λλ 5700-3000 ÅE.) von naturlichem HgCl und von kunstlich angereichertem HgCl37, Helv. Phys. Acta, 1941, 14, 420. [all data]

Howell, 1944
Howell, H.G., The ultra-violet spectra and electron configuration of HgF and related halide molecules, Proc. R. Soc. London A, 1944, 182, 95. [all data]

Wieland, 1948
Wieland, K., Spectres d'absorption des halogenures de mercure (HgX2) en equilibre thermique au-dessus de 1000°C, J. Chim. Phys. Phys.-Chim. Biol., 1948, 45, 3. [all data]

Krishnamurthy, 1958
Krishnamurthy, V.G., Ultra-violet bands of mercury chloride, Z. Phys., 1958, 150, 287. [all data]

Wieland, 1948, 2
Wieland, K., Molekulspektren mit Ionencharakter und ihre Beeinflussung durch Fremdgase in Contribution a l'Etude de la Structure Moleculaire, Desoer, Liege, ed(s)., 1948, 229-238. [all data]

Horne, Gosavi, et al., 1968
Horne, D.G.; Gosavi, R.; Strausz, O.P., Reactions of metal atoms. I. The combination of mercury and chlorine atoms and the dimerization of HgCl, J. Chem. Phys., 1968, 48, 4758. [all data]

Maxwell and Mosley, 1940
Maxwell, L.R.; Mosley, V.M., Internuclear distances in Se2, Te2, and HgCl by electron diffraction, Phys. Rev., 1940, 57, 21. [all data]


Notes

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