Br(CC)2Br+

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:   E
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 56480 ± 560 U gas Heilbronner, Hornung, et al., 1974

State:   D
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 53650 ± 560 U gas Heilbronner, Hornung, et al., 1974

State:   C
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 32840 ± 320 U gas Heilbronner, Hornung, et al., 1974

State:   B
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 27670 ± 320 U gas Heilbronner, Hornung, et al., 1974

State:   A
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 16838 ± 05 gas A-X 510 695 Klapstein, Maier, et al., 1983
Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
Σg+ 1 CC stretch 2186 ± 2 gas LF Klapstein, Maier, et al., 1983
2 C-C stretch 1071 ± 2 gas LF Klapstein, Maier, et al., 1983
3 CBr stretch 242 ± 1 gas EF LF Klapstein, Maier, et al., 1983
Πg 7 Skel. deform. 281 gas LF Klapstein, Maier, et al., 1983
Πu 9 Skel. deform. 62 ± 2 gas LF Klapstein, Maier, et al., 1983

State:   X

Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
Σg+ 1 CC s-stretch 2186 gas EF Allan, Kloster-Jensen, et al., 1978
Klapstein, Maier, et al., 1983
2 C-C stretch 1225 gas EF Allan, Kloster-Jensen, et al., 1978
Klapstein, Maier, et al., 1983
3 CBr s-stretch 252 gas EF Allan, Kloster-Jensen, et al., 1978
Klapstein, Maier, et al., 1983

Additional references: Jacox, 1994, page 345

Notes

UUpper bound
oEnergy separation between the v = 0 levels of the excited and electronic ground states.

References

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Heilbronner, Hornung, et al., 1974
Heilbronner, E.; Hornung, V.; Maier, J.P.; Kloster-Jensen, E., The photoelectron spectra of halodiacetylenes, dihalodiacetylenes, and halomethyldiacetylenes, J. Am. Chem. Soc., 1974, 96, 4252. [all data]

Klapstein, Maier, et al., 1983
Klapstein, D.; Maier, J.P.; Misev, L., Emission and laser excitation spectra of rotationally cooled cations: A 2Πu«8644»X 2Πg band systems of X(C≡C)2 X+, X=Cl, Br, J. Chem. Phys., 1983, 78, 9, 5393, https://doi.org/10.1063/1.445466 . [all data]

Allan, Kloster-Jensen, et al., 1978
Allan, M.; Kloster-Jensen, E.; Maier, J.P.; Marthaler, O., Emission spectra of polyatomic radical cations in the gas phase: Ã2Πu → X2Πg band systems of Cl(C«58876»C)2 Cl+, Br(, J. Electron Spectrosc. Relat. Phenom., 1978, 14, 5, 359, https://doi.org/10.1016/0368-2048(78)80009-7 . [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]

Notes

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