Ethane, 1,2-diiodo-
- Formula: C2H4I2
- Molecular weight: 281.8621
- IUPAC Standard InChI: InChI=1S/C2H4I2/c3-1-2-4/h1-2H2
- IUPAC Standard InChIKey: GBBZLMLLFVFKJM-UHFFFAOYSA-N
- CAS Registry Number: 624-73-7
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Diiodoethane; Ethylene iodide; 1,2-Diiodoethane; CH2ICH2I
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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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | 73.3 ± 1.1 | kJ/mol | Ccb | Carson, Laye, et al., 1994 | |
| ΔfH°gas | 66.8 ± 1.7 | kJ/mol | Eqk | Benson and Amano, 1962 | Reanalyzed by Cox and Pilcher, 1970, Original value = 66.5 ± 0.8 kJ/mol |
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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°solid | 9.3 ± 0.8 | kJ/mol | Ccb | Carson, Laye, et al., 1994 | |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°solid | -1368.0 ± 0.6 | kJ/mol | Ccb | Carson, Laye, et al., 1994 |
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:
BS - Robert L. Brown and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tboil | 473.2 | K | N/A | Weast and Grasselli, 1989 | BS |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔvapH° | 49.8 | kJ/mol | GC | Carson, Laye, et al., 1994 | AC |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔsubH° | 64.0 ± 0.7 | kJ/mol | V | Carson, Laye, et al., 1994 | ALS |
Enthalpy of vaporization
| ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 47.7 | 386. | A | Stephenson and Malanowski, 1987 | Based on data from 371. - 526. K. See also Dykyj, 1970.; AC |
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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
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
+
=
By formula: C2H4 + I2 = C2H4I2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -48.1 ± 0.8 | kJ/mol | Eqk | Abrams and Davis, 1954 | gas phase |
| ΔrH° | -56. ± 2. | kJ/mol | Eqk | Cutherbertson and Kistiakowsky, 1935 | gas phase; Heat of dissociation |
=
+
By formula: C2H4I2 = C2H4 + I2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 48.1 ± 0.8 | kJ/mol | Eqk | Benson and Amano, 1962 | 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 compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 9.4 | PE | Chau and McDowell, 1975 | LLK |
| 9.50 ± 0.02 | PE | Chau and McDowell, 1975 | Vertical value; LLK |
IR Spectrum
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Data compiled by: Coblentz Society, Inc.
- SOLID (MINERAL OIL MULL); Not specified, most likely a prism, grating, or hybrid spectrometer.; DIGITIZED BY NIST FROM HARD COPY; 4 cm-1 resolution
- SOLUTION (10% CCl4 FOR 5000-1330, 10% CS2 FOR 1330-625 CM-1); Not specified, most likely a prism, grating, or hybrid spectrometer.; DIGITIZED BY NIST FROM HARD COPY; 4 cm-1 resolution
- SOLUTION (10% IN CCl4 FOR 3800-1340, AND 10% IN CS2 FOR 1340-450 CM-1); DOW KBr FOREPRISM-GRATING; DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS); 4 cm-1 resolution
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 | Japan AIST/NIMC Database- Spectrum MS-NW-2979 |
| NIST MS number | 231098 |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, 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.
Carson, Laye, et al., 1994
Carson, A.S.; Laye, P.G.; Pedley, J.B.; Welsby, A.M.; Chickos, J.S.; Hosseini, S.,
The enthalpies of formation of iodoethane, 1,2-diiodoethane, 1,3-diiodopropane, and 1,4-diiodobutane,
J. Chem. Thermodyn., 1994, 26, 1103-1109. [all data]
Benson and Amano, 1962
Benson, S.W.; Amano, A.,
Thermodynamics of iodine addition to ethylene, propylene, and cyclopropane,
J. Chem. Phys., 1962, 36, 3464-3471. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]
Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw,
Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2
. [all data]
Dykyj, 1970
Dykyj, J.,
Petrochemica, 1970, 10, 2, 51. [all data]
Abrams and Davis, 1954
Abrams, A.; Davis, T.W.,
Use of radioactive iodine to determine equilibrium constants in ethylene-iodine-1,2-diiodoethane systems,
J. Am. Chem. Soc., 1954, 76, 5993-59. [all data]
Cutherbertson and Kistiakowsky, 1935
Cutherbertson, G.R.; Kistiakowsky, G.B.,
The thermal equilibrium between ethylene iodide, ethylene and iodine,
J. Chem. Phys., 1935, 3, 631-634. [all data]
Chau and McDowell, 1975
Chau, F.T.; McDowell, C.A.,
Photoelectron spectra of 1,2 dichloro-, 1,2 dibromo- and 1,2 diiodo-ethane,
J. Electron Spectrosc. Relat. Phenom., 1975, 6, 365. [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, IR Spectrum, Mass spectrum (electron ionization), References
- Symbols used in this document:
Tboil Boiling point ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔsubH° Enthalpy of sublimation 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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