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, 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 | -41.599 | kcal/mol | Review | Chase, 1998 | Data last reviewed in June, 1973 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 75.810 | cal/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 (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 2000. - 6000. |
|---|---|
| A | 13.87950 |
| B | 0.054556 |
| C | -0.041676 |
| D | 0.009813 |
| E | -0.063313 |
| F | -45.95280 |
| G | 92.23659 |
| H | -41.59990 |
| 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 | -82.278 | kcal/mol | Review | Chase, 1998 | Data last reviewed in June, 1973 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid,1 bar | 36.656 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1973 |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔfH°solid | -85.901 | kcal/mol | Review | Chase, 1998 | Data last reviewed in June, 1973 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid | 32.500 | cal/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 (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 774. - 2000. |
|---|---|
| A | 26.65010 |
| B | 8.730839×10-9 |
| C | -5.862042×10-9 |
| D | 1.308310×10-9 |
| E | 3.755510×10-10 |
| F | -91.74080 |
| G | 64.99699 |
| H | -82.27811 |
| 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 (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. - 774. |
|---|---|
| A | 16.44760 |
| B | 6.746011 |
| C | 0.141829 |
| D | -0.040056 |
| E | -0.003947 |
| F | -91.11819 |
| G | 50.36520 |
| H | -85.90019 |
| 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 (atm)
T = temperature (K)
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| Temperature (K) | A | B | C | Reference | Comment |
|---|---|---|---|---|---|
| 931. - 1154. | 4.41496 | 4564.909 | -194.347 | Barchuk and Dubovoi, 1973 | Coefficents calculated by NIST from author's data. |
| 820. - 1227. | 4.63161 | 4896.563 | -168.921 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
Vibrational and/or electronic energy levels
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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: 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, 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]
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, Vibrational and/or electronic energy levels, References
- Symbols used in this document:
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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