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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Condensed phase thermochemistry data
Go To: Top, Phase change data, References, Notes
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 |
Phase change data
Go To: Top, Condensed phase thermochemistry data, References, Notes
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
CAL - James S. Chickos, William E. Acree, Jr., Joel F. Liebman, Students of Chem 202 (Introduction to the Literature of Chemistry), University of Missouri -- St. Louis
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Ttriple | 230.13 | K | N/A | Sheiman, Nistratov, et al., 1984, 2 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.02 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 7.27 ± 0.05 | kcal/mol | CC-SB | Sokolovskii and Baev, 1984 | Another value for the enthalpy of vaporization has been reported: 7.05 ± 0.1 kcal/mol Long and Cattanach, 1961.; MS |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
7.27 ± 0.02 | 273. to 313. | N/A | Baev, 1997 | AC |
7.15 | 283. | BG | Bamford, Levi, et al., 1946 | Based on data from 248. to 318. K.; AC |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
1.63 | 230.1 | Domalski and Hearing, 1996 | AC |
Entropy of fusion
ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
1.21 | 210.3 | Domalski and Hearing, 1996 | CAL |
7.094 | 230.1 |
Enthalpy of phase transition
ΔHtrs (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
0.2536 | 210.26 | crystaline, II | crystaline, I | Sheiman, Nistratov, et al., 1984 | DH |
1.632 | 230.13 | crystaline, I | liquid | Sheiman, Nistratov, et al., 1984 | DH |
Entropy of phase transition
ΔStrs (cal/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
1.21 | 210.26 | crystaline, II | crystaline, I | Sheiman, Nistratov, et al., 1984 | DH |
7.091 | 230.13 | crystaline, I | liquid | Sheiman, Nistratov, et al., 1984 | DH |
References
Go To: Top, Condensed phase thermochemistry data, Phase change 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]
Sheiman, Nistratov, et al., 1984, 2
Sheiman, M.S.; Nistratov, V.P.; Kamelova, G.P.; Rabinovich, I.B.,
Low-temperature heat capacity of organic compounds of aluminum and zinc
in Probl. Kalorim. Khim. Termodin., Dokl. Vses. Konf., 10th, Akad. Nauk SSSS Inst. Khim. Fiz.: Chernogolovka, USSR, Vol. 2 2, 1984. [all data]
Sokolovskii and Baev, 1984
Sokolovskii, A.E.; Baev, A.K.,
Zh. Obshch. Khim., 1984, 54, 103. [all data]
Long and Cattanach, 1961
Long, L.H.; Cattanach, J.,
J. Inorg. Nucl. Chem., 1961, 20, 340. [all data]
Baev, 1997
Baev, A.K.,
Thermodynamic study of structural changes in solutions of dimethyl-zinc with methyl compounds of Group VIB elements,
Zh. Neorg. Khim., 1997, 42, 4, 662. [all data]
Bamford, Levi, et al., 1946
Bamford, C.H.; Levi, D.L.; Newitt, D.M.,
91. Physical and chemical properties of organo-metallic compounds. Part I. The vapour pressures and freezing points of simple metal alkyls of Groups II, III, and V,
J. Chem. Soc., 1946, 468, https://doi.org/10.1039/jr9460000468
. [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]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid S°liquid Entropy of liquid at standard conditions Ttriple Triple point temperature ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion 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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