Dimethylzinc
- Formula: C2H6Zn
- Molecular weight: 95.45
- IUPAC Standard InChIKey: AXAZMDOAUQTMOW-UHFFFAOYSA-N
- CAS Registry Number: 544-97-8
- Chemical structure:
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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 | 55.4 ± 5.9 | kJ/mol | Review | Martinho Simões | |
ΔfH°gas | 52.9 ± 1.3 | kJ/mol | Review | Martinho Simões |
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° | -341.8 ± 0.8 | kJ/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° | 266.5 ± 6.3 | kJ/mol | KinG | Jackson, 1989 | |
ΔrH° | 276. to 298. | kJ/mol | N/A | Smith and Patrick, 1983 | |
ΔrH° | 285. ± 17. | kJ/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
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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]
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]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds
in Academic Press, New York, 1970. [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 ΔfH°gas Enthalpy of formation of gas at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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