Lead, tetramethyl-
- Formula: C4H12Pb
- Molecular weight: 267.3
- IUPAC Standard InChIKey: XOOGZRUBTYCLHG-UHFFFAOYSA-N
- CAS Registry Number: 75-74-1
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Plumbane, tetramethyl-; Tetramethyllead; Tetramethylplumbane; (CH3)4Pb; Piombo tetra-metile; Tetramethylolovo; TML
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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.
Data compiled by: José A. Martinho Simões
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | 32.5 ± 1.1 | kcal/mol | Review | Martinho Simões | Selected data |
ΔfH°gas | 40.06 ± 0.79 | kcal/mol | Review | Martinho Simões | |
ΔfH°gas | 3.2 ± 3.1 | kcal/mol | Review | Martinho Simões |
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.
Data compiled as indicated in comments:
MS - José A. Martinho Simões
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°liquid | 23.4 ± 1.1 | kcal/mol | Review | Martinho Simões | Selected data; MS |
ΔfH°liquid | 30.98 ± 0.79 | kcal/mol | Review | Martinho Simões | MS |
ΔfH°liquid | -5.9 ± 3.1 | kcal/mol | Review | Martinho Simões | The enthalpy of formation of Pb(Me)4(l) is calculated as -0.6 ± 3.0 kcal/mol by assuming that PbO(cr, yellow) is the product oxide.; MS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -887.00 ± 0.31 | kcal/mol | CC-RB | Good, Scott, et al., 1959 | Please also see Pedley and Rylance, 1977 and Cox and Pilcher, 1970.; MS |
ΔcH°liquid | -869.19 ± 0.76 | kcal/mol | CC-SB | Chlupacek, 1953 | MS |
ΔcH°liquid | -837.6 ± 3.0 | kcal/mol | CC-SB | Lippincott and Tobin, 1953 | MS |
Quantity | Value | Units | Method | Reference | Comment |
S°liquid | 76.479 | cal/mol*K | N/A | Good, Scott, et al., 1959, 2 | DH |
Constant pressure heat capacity of liquid
Cp,liquid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
48.40 | 298.15 | Good, Scott, et al., 1959, 2 | DH |
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
MS - José A. Martinho Simões
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tfus | 242.92 | K | N/A | Staveley, Warren, et al., 1954 | Uncertainty assigned by TRC = 0.1 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 9.08 ± 0.1 | kcal/mol | CC-RB | Abraham and Irving, 1980 | MS |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
8.53 | 303. | Tanaka and Nagai, 1929 | Based on data from 298. to 308. K.; AC |
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 |
---|---|---|---|---|---|
273. to 333. | 4.13688 | 1376.726 | -50.129 | Good, Douslin, et al., 1959 | Coefficents calculated by NIST from author's data. |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
2.5810 | 242.92 | Staveley, Warren, et al., 1954, 2 | DH |
2.58 | 242.9 | Domalski and Hearing, 1996 | AC |
Entropy of fusion
ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
10.62 | 242.92 | Staveley, Warren, et al., 1954, 2 | DH |
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: José A. Martinho Simões
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
(g) = C3H9Pb (g) + (g)
By formula: C4H12Pb (g) = C3H9Pb (g) + CH4 (g)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 55.0 to 58.1 | kcal/mol | N/A | Smith and Patrick, 1983 | |
ΔrH° | 57.0 ± 4.0 | kcal/mol | N/A | McMillen and Golden, 1982 |
Mass spectrum (electron ionization)
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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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
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Due to licensing restrictions, this spectrum cannot be downloaded.
Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
Origin | API 0698 |
NIST MS number | 13031 |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Mass spectrum (electron ionization), Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Martinho Simões
Martinho Simões, J.A.,
Private communication (see http://webbook.nist.gov/chemistry/om/). [all data]
Good, Scott, et al., 1959
Good, W.D.; Scott, D.W.; Lacina, J.L.; McCullough, J.P.,
J. Phys. Chem., 1959, 63, 1139. [all data]
Pedley and Rylance, 1977
Pedley, J.B.; Rylance, J.,
Computer Analysed Thermochemical Data: Organic and Organometallic Compounds, University of Sussex, Brigton, 1977. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds
in Academic Press, New York, 1970. [all data]
Chlupacek, 1953
Chlupacek, W.,
Chem. Tech., 1953, art 8. [all data]
Lippincott and Tobin, 1953
Lippincott, E.R.; Tobin, M.C.,
J. Am. Chem. Soc., 1953, 75, 4141. [all data]
Good, Scott, et al., 1959, 2
Good, W.D.; Scott, D.W.; Lacina, J.L.; McCullough, J.P.,
Tetramethyllead: heat of formation by rotating-bomb calorimetry,
J. Phys. Chem., 1959, 63, 1139-1142. [all data]
Staveley, Warren, et al., 1954
Staveley, L.A.K.; Warren, J.B.; Paget, H.P.; Dowrick, D.J.,
Some Thermodynamic Properties of Compounds of the Formula MX4 II. Tetraalkyl Compounds,
J. Chem. Soc., 1954, 1954, 1992. [all data]
Abraham and Irving, 1980
Abraham, M.H.; Irving, R.J.,
J. Chem. Thermodyn., 1980, 12, 539. [all data]
Tanaka and Nagai, 1929
Tanaka, Y.; Nagai, Y.,
Proc. Imp. Acad. (Tokyo), 1929, 5, 78. [all data]
Good, Douslin, et al., 1959
Good, W.D.; Douslin, D.R.; Scott, D.W.; George, A.; Lacina, J.L.; Dawson, J.P.; Waddington, G.,
Thermochemistry and vapor pressure of aliphatic fluorocarbons. A comparison of the C-F and C-H thermochemical bond energies,
J. Phys. Chem., 1959, 63, 1133-1138. [all data]
Staveley, Warren, et al., 1954, 2
Staveley, L.A.K.; Warren, J.B.; Paget, H.P.; Dowrick, D.J.,
Some thermodynamic properties of compounds of the formula MX4. Part II. Tetra-alkyl compounds, 1954, J. [all data]
Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D.,
Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III,
J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985
. [all data]
Smith and Patrick, 1983
Smith, G.P.; Patrick, R.,
Int. J. Chem. Kinet., 1983, 15, 167. [all data]
McMillen and Golden, 1982
McMillen, D.F.; Golden, D.M.,
Hydrocarbon bond dissociation energies,
Ann. Rev. Phys. Chem., 1982, 33, 493. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Mass spectrum (electron ionization), References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid S°liquid Entropy of liquid at standard conditions Tfus Fusion (melting) point ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔrH° Enthalpy of reaction at standard conditions ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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