lead
- Formula: Pb
- Molecular weight: 207.2
- IUPAC Standard InChIKey: WABPQHHGFIMREM-UHFFFAOYSA-N
- CAS Registry Number: 7439-92-1
- Chemical structure:
This structure is also available as a 2d Mol file - Permanent link for this species. Use this link for bookmarking this species for future reference.
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- Data at other public NIST sites:
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- NIST Atomic Spectra Database - Levels Holdings (on physics web site)
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- Gas Phase Kinetics Database
- X-ray Photoelectron Spectroscopy Database, version 5.0
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry 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.
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | 46.7 ± 0.2 | kcal/mol | Review | Cox, Wagman, et al., 1984 | CODATA Review value |
ΔfH°gas | 46.654 | kcal/mol | Review | Chase, 1998 | Data last reviewed in March, 1962 |
Quantity | Value | Units | Method | Reference | Comment |
S°gas,1 bar | 41.916 ± 0.001 | cal/mol*K | Review | Cox, Wagman, et al., 1984 | CODATA Review value |
S°gas,1 bar | 41.914 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in March, 1962 |
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.
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | 2019.022 to 6000. |
---|---|
A | -20.47290 |
B | 16.55870 |
C | -3.182959 |
D | 0.200772 |
E | 17.48260 |
F | 79.67220 |
G | 40.64080 |
H | 46.65399 |
Reference | Chase, 1998 |
Comment | Data last reviewed in March, 1962 |
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 | 1.02 | kcal/mol | Review | Chase, 1998 | Data last reviewed in March, 1962 |
Quantity | Value | Units | Method | Reference | Comment |
S°liquid,1 bar | 17.14 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in March, 1962 |
Quantity | Value | Units | Method | Reference | Comment |
S°solid,1 bar | 15.49 ± 0.072 | cal/mol*K | Review | Cox, Wagman, et al., 1984 | CODATA Review value |
Quantity | Value | Units | Method | Reference | Comment |
S°solid | 15.48 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in March, 1962 |
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.
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | 600.6 to 2019.022 |
---|---|
A | 9.083292 |
B | -3.494859 |
C | 1.734100 |
D | -0.246981 |
E | -0.079057 |
F | -1.898740 |
G | 28.39369 |
H | 1.023660 |
Reference | Chase, 1998 |
Comment | Data last reviewed in March, 1962 |
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.
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | 298. to 600.6 |
---|---|
A | 5.978609 |
B | 1.300631 |
C | 0.970690 |
D | -0.295462 |
E | -0.002547 |
F | -1.857691 |
G | 22.27510 |
H | 0.000000 |
Reference | Chase, 1998 |
Comment | Data last reviewed in March, 1962 |
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: Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tfus | 600.64 | K | N/A | Anonymous, 1988 | Uncertainty assigned by TRC = 0.005 K; nominal value, from the catalog |
Tfus | 600.08 | K | N/A | Callanan, Sullivan, et al., 1985 | Uncertainty assigned by TRC = 0.3 K |
Reaction 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.
Data compiled by: John E. Bartmess
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
(CAS Reg. No. 64417-78-3 • 4294967295) + = CAS Reg. No. 64417-78-3
By formula: (CAS Reg. No. 64417-78-3 • 4294967295Pb) + Pb = CAS Reg. No. 64417-78-3
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 42.98 ± 0.41 | kcal/mol | N/A | Ho, Polak, et al., 1992 | gas phase |
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 evaluated as indicated in comments:
L - Sharon G. Lias
Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
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
B - John E. Bartmess
View reactions leading to Pb+ (ion structure unspecified)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 7.4167 ± 0.00003 | eV | N/A | N/A | L |
Electron affinity determinations
EA (eV) | Method | Reference | Comment |
---|---|---|---|
0.3650 ± 0.0080 | LPES | Feigerle, Corderman, et al., 1981 | B |
<0.500002 | PD | Feldmann, Rackwitz, et al., 1977 | B |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
7.6 ± 0.2 | EI | Makarov and Zbezhneva, 1993 | LL |
7.41673 ± 0.00006 | LS | Ma, Hui, et al., 1992 | LL |
7.41666 | EVAL | Lide, 1992 | LL |
7.4 ± 0.4 | EI | Semenikhin, Rykov, et al., 1983 | LBLHLM |
7.41666 ± 0.00002 | S | Brown, Tilford, et al., 1977 | LLK |
7.42 ± 0.01 | PE | Suzer, Banna, et al., 1975 | LLK |
7.416 | S | Wood and Andrew, 1968 | RDSH |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Cox, Wagman, et al., 1984
Cox, J.D.; Wagman, D.D.; Medvedev, V.A.,
CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, 1984, 1. [all data]
Chase, 1998
Chase, M.W., Jr.,
NIST-JANAF Themochemical Tables, Fourth Edition,
J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]
Anonymous, 1988
Anonymous, X.,
, NBS Spec. Publ. (U. S.) 260, 1988. [all data]
Callanan, Sullivan, et al., 1985
Callanan, J.E.; Sullivan, S.A.; Vecchia, D.F.,
Feasibility Study for the Development of Standards Using Differential Scanning Calorimetry, Natl. Bur. Stand. Spec. Publ. 260-99 1985, 1985. [all data]
Ho, Polak, et al., 1992
Ho, J.; Polak, M.L.; Lineberger, W.C.,
Photoelectron Spectroscopy of Group-IV Heavy Metal Dimers - Sn2-, Pb2-, and SnPb-,
J. Chem. Phys., 1992, 96, 1, 144, https://doi.org/10.1063/1.462503
. [all data]
Feigerle, Corderman, et al., 1981
Feigerle, C.S.; Corderman, R.R.; Lineberger, W.C.,
Electron affinities of B, Al, Bi, and Pb,
J. Chem. Phys., 1981, 74, 2, 1513, https://doi.org/10.1063/1.441174
. [all data]
Feldmann, Rackwitz, et al., 1977
Feldmann, D.; Rackwitz, R.; Heincke, H.; Kaiser, H.J.,
Photoabsolung von Elektronen der Ionen B-, Ga-, In-, Tl-, Ge-, und Pb-,
Z. Naturforschung A, 1977, 32, 302. [all data]
Makarov and Zbezhneva, 1993
Makarov, A.V.; Zbezhneva, S.G.,
Use of high-temperature mass spectrometry for analysis of the vapour phase of some substances used in film deposition,
Vysokochist. Veshchestva, 1993, 1, 124. [all data]
Ma, Hui, et al., 1992
Ma, W.Y.; Hui, Q.; Li, L.Q.; Zhao, W.Z.; Wen, K.L.; Chen, D.Y.,
RIS studies of Rydberg structures of the lead atom,
Inst. Phys. Conf. Ser., 1992, 128(2), 75. [all data]
Lide, 1992
Lide, D.R. (Editor),
Ionization potentials of atoms and atomic ions
in Handbook of Chem. and Phys., 1992, 10-211. [all data]
Semenikhin, Rykov, et al., 1983
Semenikhin, V.I.; Rykov, A.N.; Sidorov, L.N.,
Mass spectrometric study of the evaporation of lead monoxide,
Russ. J. Phys. Chem., 1983, 47, 1008, In original 1663. [all data]
Brown, Tilford, et al., 1977
Brown, C.M.; Tilford, S.G.; Ginter, M.L.,
Absorption spectrum of Pb I between 1350 and 2041 Å,
J. Opt. Soc. Am., 1977, 67, 1240. [all data]
Suzer, Banna, et al., 1975
Suzer, S.; Banna, M.S.; Shirley, D.A.,
Relativistic and correlation effects in the 21.2-eV photoemission spectrum of atomic lead,
J. Chem. Phys., 1975, 63, 3473. [all data]
Wood and Andrew, 1968
Wood, D.R.; Andrew, K.L.,
Arc spectrum of lead,
J. Opt. Soc. Am., 1968, 58, 818. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
EA Electron affinity IE (evaluated) Recommended ionization 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 S°solid,1 bar Entropy of solid at standard conditions (1 bar) Tfus Fusion (melting) point ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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