Hexadiynedinitrile
- Formula: C6N2
- Molecular weight: 100.0776
- IUPAC Standard InChIKey: HEUVKASCJJGDBZ-UHFFFAOYSA-N
- CAS Registry Number: 16419-78-6
- Chemical structure:
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Phase change data
Go To: Top, Gas phase ion energetics 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:
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 |
---|---|---|---|---|---|
ΔsubH° | 35.94 | kJ/mol | V | Saggiomo, 1957 | Hfusion=1.360 kcal/mol; ALS |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
30.2 | 355. | A | Stephenson and Malanowski, 1987 | Based on data from 341. to 369. K. See also SAGGIOMO, 1957.; AC |
Enthalpy of sublimation
ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
34.4 | 309. | A | Stephenson and Malanowski, 1987 | Based on data from 294. to 335. K.; AC |
35.9 | 315. | I | SAGGIOMO, 1957 | Based on data from 295. to 335. K.; AC |
Gas phase ion energetics 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:
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 |
---|---|---|---|
11.2 | S | Connors, Roebber, et al., 1974 | LLK |
11.4 ± 0.2 | EI | Dibeler, Reese, et al., 1961 | RDSH |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C+ | 23.0 ± 0.5 | ? | EI | Dibeler, Reese, et al., 1961 | RDSH |
CN+ | 20.0 ± 1.0 | ? | EI | Dibeler, Reese, et al., 1961 | RDSH |
C2+ | 18.4 ± 1.0 | ? | EI | Dibeler, Reese, et al., 1961 | RDSH |
C2N+ | 17.0 ± 0.1 | ? | EI | Dibeler, Reese, et al., 1961 | RDSH |
C3+ | 23.0 ± 2.0 | ? | EI | Dibeler, Reese, et al., 1961 | RDSH |
C3N+ | 22.0 ± 0.5 | ? | EI | Dibeler, Reese, et al., 1961 | RDSH |
C4+ | 17.8 ± 0.4 | ? | EI | Dibeler, Reese, et al., 1961 | RDSH |
C4N+ | 19.0 ± 1.0 | C2N | EI | Dibeler, Reese, et al., 1961 | RDSH |
C5+ | 24.0 ± 0.5 | ? | EI | Dibeler, Reese, et al., 1961 | RDSH |
C5N+ | 17.3 ± 0.2 | CN | EI | Dibeler, Reese, et al., 1961 | RDSH |
C6N+ | 19.2 ± 0.3 | N | EI | Dibeler, Reese, et al., 1961 | RDSH |
N+ | ≤19. | ? | EI | Dibeler, Reese, et al., 1961 | RDSH |
References
Go To: Top, Phase change 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.
Saggiomo, 1957
Saggiomo, A.J.,
The dinitriles of acetylenedicarboxylic and polyacetylenedicarboxylic acids. I. Dicyanoacetylene and dicycanodiacetylene,
J. Org. Chem., 1957, 22, 1171. [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]
SAGGIOMO, 1957
SAGGIOMO, ANDREW J.,
The Dinitriles of Acetylenedicarboxylic and Polyacetylenedicarboxylic Acids. 1 I. 2 Dicyanoacetylene and Dicyanodiacetylene,
J. Org. Chem., 1957, 22, 10, 1171-1175, https://doi.org/10.1021/jo01361a009
. [all data]
Connors, Roebber, et al., 1974
Connors, R.E.; Roebber, J.L.; Weiss, K.,
Vacuum ultraviolet spectroscopy of cyanogen and cyanoacetylenes,
J. Chem. Phys., 1974, 60, 5011. [all data]
Dibeler, Reese, et al., 1961
Dibeler, V.H.; Reese, R.M.; Franklin, J.L.,
Mass spectrometric study of cyanogen and cyanoacetylenes,
J. Am. Chem. Soc., 1961, 83, 1813. [all data]
Notes
Go To: Top, Phase change data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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