cyc-C5D5

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:   A
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 29819.434 ± 0.002 gas A-X Engleman and Ramsay, 1970
Yu, Williamson, et al., 1989
Applegate, Bezant, et al., 2001
Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
a1' 2 994 gas LF Applegate, Bezant, et al., 2001
e1 8 CD deform. 116 H gas AB LF Engleman and Ramsay, 1970
Applegate, Bezant, et al., 2001
e2' 11 798 T gas LF Applegate, Bezant, et al., 2001
e2 14 296 H gas LF Applegate, Bezant, et al., 2001

State:   X

Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
a1' 2 1045 gas LF Applegate, Bezant, et al., 2001
a2 4 562 H gas LF Applegate, Bezant, et al., 2001
e1 8 616 H gas LF Applegate, Bezant, et al., 2001
e2' 10 1353 gas LF Applegate, Bezant, et al., 2001
11 861 gas LF Applegate, Bezant, et al., 2001
e2 13 743 H gas LF Applegate, Bezant, et al., 2001
14 414 H gas LF Applegate, Bezant, et al., 2001

Notes

H(1/2)(2ν)
TTentative assignment or approximate value
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.

Engleman and Ramsay, 1970
Engleman, R., Jr.; Ramsay, D.A., Electronic absorption spectrum of the cyclopentadienyl radical (C, Can. J. Phys., 1970, 48, 8, 964, https://doi.org/10.1139/p70-125 . [all data]

Yu, Williamson, et al., 1989
Yu, L.; Williamson, J.M.; Miller, T.A., Rotationally resolved electronic spectrum of jet-cooled deuterated cyclopentadienyl radical, Chem. Phys. Lett., 1989, 162, 6, 431, https://doi.org/10.1016/0009-2614(89)87003-4 . [all data]

Applegate, Bezant, et al., 2001
Applegate, B.E.; Bezant, A.J.; Miller, T.A., The Jahn--Teller and related effects in the cyclopentadienyl radical. II. Vibrational analysis of the A [sup 2]A[sub 2][sup ´´]--X [sup 2]E[sub 1][sup ´´] electronic transition, J. Chem. Phys., 2001, 114, 11, 4869, https://doi.org/10.1063/1.1348276 . [all data]

Notes

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