HCNC

Vibrational and/or electronic energy levels

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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: Marilyn E. Jacox

State:   C
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
Tx = 45900 Ar C-X 200 240 Maier, Reisenauer, et al., 1998

State:   B
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 32150 Ar B-X 270 311 Maier, Reisenauer, et al., 1998
Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
a' NC stretch 1950 T Ar AB Maier, Reisenauer, et al., 1998
400 T Ar AB Maier, Reisenauer, et al., 1998

State:   A
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
Tx = 11700 Ar A-X 600 1100 Maier, Reisenauer, et al., 1998
Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
a' 520 T Ar AB Maier, Reisenauer, et al., 1998

State:   a
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 400 ± 225 gas Nimlos, Davico, et al., 2002

State:   X

Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
a' 1 CH stretch 2834.5 w m Ar IR Maier, Reisenauer, et al., 1998
1 CH stretch 2852.8 N2 IR Maier, Reisenauer, et al., 1998
2 N=C stretch 1859.5 vs Ar IR Maier, Reisenauer, et al., 1998
2 N=C stretch 1874.2 N2 IR Maier, Reisenauer, et al., 1998
3 HCN bend 1173.5 m Ar IR Maier, Reisenauer, et al., 1998
3 HCN bend 1182.9 N2 IR Maier, Reisenauer, et al., 1998
4 C-N stretch 1089 ± 190 gas PE Nimlos, Davico, et al., 2002
4 C-N stretch 1080.5 w Ar IR Maier, Reisenauer, et al., 1998
4 C-N stretch 1090.9 N2 IR Maier, Reisenauer, et al., 1998

Additional references: Jacox, 2003, page 185

Notes

wWeak
mMedium
vsVery strong
TTentative assignment or approximate value
oEnergy separation between the v = 0 levels of the excited and electronic ground states.
xEnergy separation between the band maximum of the excited electronic state and the v = 0 level of the ground state.

References

Go To: Top, 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.

Maier, Reisenauer, et al., 1998
Maier, G.; Reisenauer, H.P.; Rademacher, K., Cyanocarbene, Isocyanocarbene, and Azacyclopropenylidene: A Matrix-Spectroscopic Study, Chem. Eur. J., 1998, 4, 10, 1957, https://doi.org/10.1002/(SICI)1521-3765(19981002)4:10<1957::AID-CHEM1957>3.0.CO;2-1 . [all data]

Nimlos, Davico, et al., 2002
Nimlos, M.R.; Davico, G.; Geise, C.M.; Wenthold, P.G.; Blanksby, W.C. Lineberger.S.J.; Hadad, C.M.; Petersson, G.A.; Ellison, G.B., Photoelectron spectroscopy of HCCN[sup -] and HCNC[sup -] reveals the quasilinear triplet carbenes, HCCN and HCNC, J. Chem. Phys., 2002, 117, 9, 4323, https://doi.org/10.1063/1.1496473 . [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]

Notes

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