Dimethylzinc
- Formula: C2H6Zn
- Molecular weight: 95.45
- IUPAC Standard InChIKey: AXAZMDOAUQTMOW-UHFFFAOYSA-N
- CAS Registry Number: 544-97-8
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
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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 | 13.2 ± 1.4 | kcal/mol | Review | Martinho Simões | |
ΔfH°gas | 12.6 ± 0.31 | 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 | 6.0 ± 1.4 | kcal/mol | Review | Martinho Simões | MS |
ΔfH°liquid | 5.38 ± 0.31 | kcal/mol | Review | Martinho Simões | MS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -482.8 ± 1.4 | kcal/mol | CC-SB | Long and Norrish, 1949 | Please also see Cox and Pilcher, 1970.; MS |
Quantity | Value | Units | Method | Reference | Comment |
S°liquid | 48.18 | cal/mol*K | N/A | Sheiman, Nistratov, et al., 1984 | DH |
Constant pressure heat capacity of liquid
Cp,liquid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
30.88 | 298.15 | Sheiman, Nistratov, et al., 1984 | T = 5 to 300 K.; 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
(l) + (
• 100
) (solution) = 2
(g) + (
• 100
) (solution)
By formula: C2H6Zn (l) + (H2O4S • 100H2O) (solution) = 2CH4 (g) + (O4SZn • 100H2O) (solution)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -81.7 ± 0.2 | kcal/mol | RSC | Carson, Hartley, et al., 1949 | Please also see Pedley and Rylance, 1977 and Cox and Pilcher, 1970. |
By formula: C2H6Zn (g) = CH3Zn (g) + CH4 (g)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 63.7 ± 1.5 | kcal/mol | KinG | Jackson, 1989 | |
ΔrH° | 66.0 to 71.2 | kcal/mol | N/A | Smith and Patrick, 1983 | |
ΔrH° | 68.0 ± 4.0 | kcal/mol | N/A | McMillen and Golden, 1982 |
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:
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 |
---|---|---|---|
9.00 ± 0.02 | PI | Distefano and Dibeler, 1970 | RDSH |
8.86 ± 0.15 | EI | Winters and Kiser, 1967 | RDSH |
9.4 | PE | Creber and Bancroft, 1980 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
CH3+ | 15.1 ± 0.5 | ? | EI | Winters and Kiser, 1967 | RDSH |
CH3Zn+ | 10.22 ± 0.02 | CH3 | PI | Distefano and Dibeler, 1970 | RDSH |
CH3Zn+ | 11.2 ± 0.2 | CH3 | EI | Winters and Kiser, 1967 | RDSH |
ZnH+ | 13.9 ± 0.4 | ? | EI | Winters and Kiser, 1967 | RDSH |
Zn+ | 13.13 ± 0.02 | 2CH3 | PI | Distefano and Dibeler, 1970 | RDSH |
Zn+ | 13.4 ± 0.3 | 2CH3 | EI | Winters and Kiser, 1967 | RDSH |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry 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.
Martinho Simões
Martinho Simões, J.A.,
Private communication (see http://webbook.nist.gov/chemistry/om/). [all data]
Long and Norrish, 1949
Long, L.H.; Norrish, R.G.W.,
Phil. Trans. Roy. Soc. (London), 1949, A241, 587. [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]
Sheiman, Nistratov, et al., 1984
Sheiman, M.S.; Nistratov, V.P.; Kamelova, G.P.; Rabinovich, I.B.,
Low-temperature heat capacity of organic compounds of aluminum and zinc, Probl. Kalorim. Khim. Termodin., Dokl. Vses. Konf.,
10th, 1984, 2, 457-459. [all data]
Carson, Hartley, et al., 1949
Carson, A.S.; Hartley, K.; Skinner, H.A.,
Thermochemistry of metal alkyls. Part II.?The bond dissociation energies of some Zn?C and Cd?C bonds, and of Et?I.,
Trans. Faraday Soc., 1949, 45, 1159, https://doi.org/10.1039/tf9494501159
. [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]
Jackson, 1989
Jackson, R.L.,
Chem. Phys. Lett., 1989, 163, 315. [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]
Distefano and Dibeler, 1970
Distefano, G.; Dibeler, V.H.,
Photoionization study of the dimethyl compounds of zinc, cadmium, and mercury,
Intern. J. Mass Spectrom. Ion Phys., 1970, 4, 59. [all data]
Winters and Kiser, 1967
Winters, R.E.; Kiser, R.W.,
Ionization and fragmentation of dimethylzinc, trimethylaluminum, and trimethylantimony,
J. Organometal. Chem., 1967, 10, 7. [all data]
Creber and Bancroft, 1980
Creber, D.K.; Bancroft, G.M.,
Photoelectron studies of dialkyl group 2B compounds: Ligand field splittings intensity variations with photon energy,
Inorg. Chem., 1980, 19, 643. [all data]
Notes
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- Symbols used in this document:
AE Appearance energy Cp,liquid Constant pressure heat capacity of liquid S°liquid Entropy of liquid at standard conditions 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 ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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