CHN2
- Formula: CHN2
- Molecular weight: 41.0320
- CAS Registry Number: 12347-01-2
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Reaction thermochemistry data
Go To: Top, Gas phase ion energetics data, Vibrational and/or electronic energy levels, NIST Free Links, 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: John E. Bartmess
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
CN2- + = CHN2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1473. ± 18. | kJ/mol | G+TS | Clifford, Wenthold, et al., 1998 | gas phase; between pyrazole, tBuSH |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1441. ± 17. | kJ/mol | IMRB | Clifford, Wenthold, et al., 1998 | gas phase; between pyrazole, tBuSH |
Gas phase ion energetics data
Go To: Top, Reaction thermochemistry data, Vibrational and/or electronic energy levels, NIST Free Links, 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: John E. Bartmess
View reactions leading to CHN2+ (ion structure unspecified)
De-protonation reactions
CN2- + = CHN2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1473. ± 18. | kJ/mol | G+TS | Clifford, Wenthold, et al., 1998 | gas phase; between pyrazole, tBuSH |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1441. ± 17. | kJ/mol | IMRB | Clifford, Wenthold, et al., 1998 | gas phase; between pyrazole, tBuSH |
Vibrational and/or electronic energy levels
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, NIST Free Links, 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: Marilyn E. Jacox
State: C
Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
---|---|---|---|---|---|---|---|
To = 31521 | gas | C-X | 289 | 317 | Basco and Yee, 1968 | ||
Kroto, Morgan, et al., 1970 | |||||||
Bise, Hoops, et al., 2001 | |||||||
Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
---|---|---|---|---|---|---|---|
a' | NCN s-stretch | 1024 | gas | AB PF | Basco and Yee, 1968 Kroto, Morgan, et al., 1970 Bise, Hoops, et al., 2001 | ||
State: B
Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
---|---|---|---|---|---|---|---|
To = 28994.1 | gas | A-X | 344 | 364 | Herzberg and Warsop, 1963 | ||
Wu, Hall, et al., 1993 | |||||||
Bise, Hoops, et al., 2001 | |||||||
Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
---|---|---|---|---|---|---|---|
a | 6 | NCN deform. | 560 ± 10 | gas | PF | Bise, Hoops, et al., 2001 | |
State: X
Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
---|---|---|---|---|---|---|---|
a' | 1 | NH stretch | 3297.5 | m | Ar | IR | Maier, Eckwert, et al., 1996 |
2 | NCN a-stretch | 1879 ± 106 | gas | PE | Clifford, Wenthold, et al., 1997 | ||
2 | NCN a-stretch | 1843 | s | Ar | IR | Maier, Eckwert, et al., 1996 | |
3 | NCN s-stretch | 1049 ± 162 | gas | PE | Clifford, Wenthold, et al., 1997 | ||
3 | 1146 | vs | Ar | IR | Maier, Eckwert, et al., 1996 | ||
a | 6 | NCN deform. | 440 | T | gas | LF | Wu, Hall, et al., 1993 |
Additional references: Jacox, 1994, page 160; Jacox, 1998, page 235; Jacox, 2003, page 188; Yamamoto and Saito, 1994
Notes
m | Medium |
s | Strong |
vs | Very strong |
T | Tentative assignment or approximate value |
o | Energy separation between the v = 0 levels of the excited and electronic ground states. |
References
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Vibrational and/or electronic energy levels, NIST Free Links, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Clifford, Wenthold, et al., 1998
Clifford, E.P.; Wenthold, P.G.; Lineberger, W.C.; Peterssom, G.A.; Broaddus, K.M.; Kass, S.R.; Kato, S.,
Properties of Diazocarbene [CNN] and the diazomethyl Radical [HCNN] via Ion Chemistry and Spectroscopy,
J. Phys. Chem. A, 1998, 102, 36, 7100, https://doi.org/10.1021/jp9802735
. [all data]
Basco and Yee, 1968
Basco, N.; Yee, K.K.,
Chem. Commun., 1968, 150. [all data]
Kroto, Morgan, et al., 1970
Kroto, H.W.; Morgan, T.F.; Sheena, H.H.,
Flash photolysis of cyanogen azide, NCN3,
Trans. Faraday Soc., 1970, 66, 2237, https://doi.org/10.1039/tf9706602237
. [all data]
Bise, Hoops, et al., 2001
Bise, R.T.; Hoops, A.A.; Neumark, D.M.,
Photodissociation and photoisomerization pathways of the HNCN free radical,
J. Chem. Phys., 2001, 114, 20, 9000, https://doi.org/10.1063/1.1367411
. [all data]
Herzberg and Warsop, 1963
Herzberg, G.; Warsop, P.A.,
SPECTRUM AND STRUCTURE OF THE FREE HNCN RADICAL,
Can. J. Phys., 1963, 41, 2, 286, https://doi.org/10.1139/p63-034
. [all data]
Wu, Hall, et al., 1993
Wu, M.; Hall, G.; Sears, T.J.,
J. Chem. Soc., 1993, Faraday Trans. 89, 615. [all data]
Maier, Eckwert, et al., 1996
Maier, G.; Eckwert, J.; Bothur, A.; Reisenauer, H.P.; Schmidt, C.,
Liebigs Ann., 1996, 1041. [all data]
Clifford, Wenthold, et al., 1997
Clifford, E.P.; Wenthold, P.G.; Lineberger, W.C.; Peterssom, G.A.; Ellison, G.B.,
Photoelectron Spectroscopy of the NCN- and HNCN- Ions,
J. Phys. Chem. A, 1997, 101, 24, 4338, https://doi.org/10.1021/jp964067d
. [all data]
Jacox, 1994
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules, American Chemical Society, Washington, DC, 1994, 464. [all data]
Jacox, 1998
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules: supplement A,
J. Phys. Chem. Ref. Data, 1998, 27, 2, 115-393, https://doi.org/10.1063/1.556017
. [all data]
Jacox, 2003
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules: supplement B,
J. Phys. Chem. Ref. Data, 2003, 32, 1, 1-441, https://doi.org/10.1063/1.1497629
. [all data]
Yamamoto and Saito, 1994
Yamamoto, S.; Saito, S.,
Microwave spectrum of the HNCN radical in the X 2A' ground electronic state,
J. Chem. Phys., 1994, 101, 12, 10350, https://doi.org/10.1063/1.467915
. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Vibrational and/or electronic energy levels, NIST Free Links, References
- Symbols used in this document:
ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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