Lead dichloride
- Formula: Cl2Pb
- Molecular weight: 278.1
- IUPAC Standard InChI: InChI=1S/2ClH.Pb/h2*1H;/q;;+2/p-2
- IUPAC Standard InChIKey: HWSZZLVAJGOAAY-UHFFFAOYSA-L
- CAS Registry Number: 7758-95-4
- Chemical structure:
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, Vibrational and/or electronic energy levels, References, Notes
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 |
|---|---|---|---|---|---|
| ΔfH°gas | -174.05 | kJ/mol | Review | Chase, 1998 | Data last reviewed in June, 1973 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 317.19 | J/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1973 |
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) | 2000. - 6000. |
|---|---|
| A | 58.07183 |
| B | 0.228260 |
| C | -0.174373 |
| D | 0.041056 |
| E | -0.264902 |
| F | -192.2665 |
| G | 385.9179 |
| H | -174.0540 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in June, 1973 |
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 |
|---|---|---|---|---|---|
| ΔfH°liquid | -344.25 | kJ/mol | Review | Chase, 1998 | Data last reviewed in June, 1973 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid,1 bar | 153.37 | J/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1973 |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔfH°solid | -359.41 | kJ/mol | Review | Chase, 1998 | Data last reviewed in June, 1973 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid | 135.98 | J/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1973 |
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) | 774. - 2000. |
|---|---|
| A | 111.5040 |
| B | 3.652984×10-8 |
| C | -2.452679×10-8 |
| D | 5.473970×10-9 |
| E | 1.571306×10-9 |
| F | -383.8435 |
| G | 271.9474 |
| H | -344.2516 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in June, 1973 |
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. - 774. |
|---|---|
| A | 68.81676 |
| B | 28.22531 |
| C | 0.593413 |
| D | -0.167595 |
| E | -0.016515 |
| F | -381.2385 |
| G | 210.7280 |
| H | -359.4064 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in June, 1973 |
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.
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
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| Temperature (K) | A | B | C | Reference | Comment |
|---|---|---|---|---|---|
| 931. - 1154. | 4.42067 | 4564.909 | -194.347 | Barchuk and Dubovoi, 1973 | Coefficents calculated by NIST from author's data. |
| 820. - 1227. | 4.63732 | 4896.563 | -168.921 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
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:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
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 |
|---|---|---|---|
| 10.2 | PE | Novak and Potts, 1984 | LBLHLM |
| 10.3 ± 0.1 | EI | Hastie, Bloom, et al., 1967 | RDSH |
| 11.2 ± 0.2 | EI | Bloom and Hastie, 1966 | RDSH |
| 10.34 | PE | Novak and Potts, 1984 | Vertical value; LBLHLM |
| 10.11 | PE | Berkowitz, 1972 | Vertical value; LLK |
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| PbCl+ | 10.7 ± 0.1 | Cl | EI | Hastie, Bloom, et al., 1967 | RDSH |
| PbCl+ | ~7.1 | Cl- | EI | Hastie, Bloom, et al., 1967 | RDSH |
| PbCl+ | 11.7 ± 0.2 | Cl | EI | Bloom and Hastie, 1966 | RDSH |
Vibrational and/or electronic energy levels
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Takehiko Shimanouchi
Symmetry: C2ν Symmetry Number σ = 2
| Sym. | No | Approximate | Selected Freq. | Infrared | Raman | Comments | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Species | type of mode | Value | Rating | Value | Phase | Value | Phase | |||
| a1 | 1 | Sym str | 314 | C | 322 | solid solid | 314 p | gas | ||
| a1 | 2 | Bend | 99 | C | 99 p | gas | ||||
| b1 | 3 | Anti str | 299 | D | 299 | solid solid | 300 dp | solid solid | ||
Source: Shimanouchi, 1972
Notes
| p | Polarized |
| dp | Depolarized |
| C | 3~6 cm-1 uncertainty |
| D | 6~15 cm-1 uncertainty |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, Vibrational and/or electronic energy levels, 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]
Barchuk and Dubovoi, 1973
Barchuk, V.T.; Dubovoi, P.G.,
Measurement of a Saturated Vapor Pressure Over Highly Volitile Salt Melts,
Ukr. Khim. Zh. (Russ. Ed.), 1973, 39, 8, 838-840. [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]
Novak and Potts, 1984
Novak, I.; Potts, A.W.,
Ultraviolet photoelectron spectra of gas phase and condensed tin and lead dihalides (MX2, M = Sn, Pb X = Cl, Br, I),
J. Electron Spectrosc. Relat. Phenom., 1984, 33, 1. [all data]
Hastie, Bloom, et al., 1967
Hastie, J.W.; Bloom, H.; Morrison, J.D.,
Electronimpact studies of PbCl2, PbBr2, and PbClBr,
J. Chem. Phys., 1967, 47, 1580. [all data]
Bloom and Hastie, 1966
Bloom, H.; Hastie, J.W.,
Vapour phase composition above molten salt mixtures: a mass spectrometric study,
Australian J. Chem., 1966, 19, 1003. [all data]
Berkowitz, 1972
Berkowitz, J.,
Photoelectron spectroscopic studies with a cylindrical-mirror analyzer
in Electron Spectroscopy, ed. D.A. Shirley (North-Holland Pub. Co., Amsterdam), 1972. [all data]
Shimanouchi, 1972
Shimanouchi, T.,
Tables of Molecular Vibrational Frequencies Consolidated Volume II,
J. Phys. Chem. Ref. Data, 1972, 6, 3, 993-1102. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, Vibrational and/or electronic energy levels, References
- Symbols used in this document:
AE Appearance energy S°gas,1 bar Entropy of gas at standard conditions (1 bar) S°liquid,1 bar Entropy of liquid at standard conditions (1 bar) S°solid Entropy of solid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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