Cyanogen iodide
- Formula: CIN
- Molecular weight: 152.9219
- IUPAC Standard InChI: InChI=1S/CIN/c2-1-3
- IUPAC Standard InChIKey: WPBXOELOQKLBDF-UHFFFAOYSA-N
- CAS Registry Number: 506-78-5
- Chemical structure:
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Reaction thermochemistry data
Go To: Top, Gas phase ion energetics data, Vibrational and/or electronic energy levels, References, Notes
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
2 +
=
+
+ CNO.Na
By formula: 2HNaO + CIN = INa + H2O + CNO.Na
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -46.35 ± 0.08 | kcal/mol | Cm | Lord and Woolf, 1954 | solid phase; Heat of hydrolysis |
Gas phase ion energetics data
Go To: Top, Reaction thermochemistry data, Vibrational and/or electronic energy levels, 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:
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 10.870 ± 0.001 | S | Myer and Samson, 1970 | RDSH |
| 10.91 | PE | Lake and Thompson, 1970 | RDSH |
| 10.91 ± 0.02 | PE | Heilbronner, Hornung, et al., 1970 | RDSH |
| 10.87 ± 0.02 | PI | Dibeler and Liston, 1967 | RDSH |
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| CI+ | 17.6 ± 0.3 | N | EI | Herron and Dibeler, 1960 | RDSH |
| CN+ | 18.1 ± 0.1 | I | EI | Herron and Dibeler, 1960 | RDSH |
| I+ | 13.62 ± 0.02 | CN | PI | Dibeler and Liston, 1967 | RDSH |
| I+ | 9.8 ± 0.1 | CN- | EI | Herron and Dibeler, 1960 | RDSH |
Vibrational and/or electronic energy levels
Go To: Top, Reaction thermochemistry data, 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 by: Takehiko Shimanouchi
Symmetry: Cxν Symmetry Number σ = 1
| Sym. | No | Approximate | Selected Freq. | Infrared | Raman | Comments | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Species | type of mode | Value | Rating | Value | Phase | Value | Phase | |||
| σ+ | 1 | CN str | 2188 | C | 2188.0 | gas | ||||
| π | 2 | Deform | 305 | C | 304.5 | gas | ||||
| σ+ | 3 | CI str | 486 | C | 485.8 | gas | ||||
Source: Shimanouchi, 1972
Notes
| C | 3~6 cm-1 uncertainty |
References
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Vibrational and/or electronic energy levels, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Lord and Woolf, 1954
Lord, G.; Woolf, A.A.,
The cyanogen halides. Part III. Their heats of formation and free energies,
J. Chem. Soc., 1954, 2546-2551. [all data]
Myer and Samson, 1970
Myer, J.A.; Samson, J.A.R.,
Vacuum-ultraviolet absorption cross sections of CO, HCI, and ICN between 1050 and 2100 A,
J. Chem. Phys., 1970, 52, 266. [all data]
Lake and Thompson, 1970
Lake, R.F.; Thompson, H.,
The photoelectron spectra of some molecules containing the C N group,
Proc. Roy. Soc. (London), 1970, A317, 187. [all data]
Heilbronner, Hornung, et al., 1970
Heilbronner, E.; Hornung, V.; Muszkat, K.A.,
Die Photoelektron-Spektren von Chlor-, Brom- und Jodcyan,
Helv. Chim. Acta, 1970, 53, 347. [all data]
Dibeler and Liston, 1967
Dibeler, V.H.; Liston, S.K.,
Mass-spectrometric study of photoionization. VIII.Dicyanogen and the cyanogen halides,
J. Chem. Phys., 1967, 47, 4548. [all data]
Herron and Dibeler, 1960
Herron, J.T.; Dibeler, V.H.,
Electron impact study of the cyanogen halides,
J. Am. Chem. Soc., 1960, 82, 1555. [all data]
Shimanouchi, 1972
Shimanouchi, T.,
Tables of Molecular Vibrational Frequencies Consolidated Volume II,
J. Phys. Chem. Ref. Data, 1972, 6, 3, 993-1102. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Vibrational and/or electronic energy levels, References
- Symbols used in this document:
AE Appearance energy ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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