(cyc-C5H4)CCO

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:   ?
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
Tx = 34600 Ar Simon, Munzel, et al., 1990

State:   X

Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
2258 w Ar IR Brown, Browne, et al., 1989
2105 s Ar IR Brown, Browne, et al., 1989
CCO a-stretch 2085 Ne IR Radziszewski, Hess, et al., 1992
CCO a-stretch 2089 vs Ar IR Chapman, Chang, et al., 1985
Brown, Browne, et al., 1989
Simon, Munzel, et al., 1990
CCO a-stretch 2084 N2 IR Dunkin and MacDonald, 1979
2066 m Ar IR Brown, Browne, et al., 1989
2037 w Ar IR Brown, Browne, et al., 1989
1496 w Ar IR Brown, Browne, et al., 1989
1351 w Ar IR Brown, Browne, et al., 1989
1286 w Ar IR Brown, Browne, et al., 1989
1146 Ar IR Brown, Browne, et al., 1989
1075 w T Ar IR Brown, Browne, et al., 1989
877 w Ar IR Brown, Browne, et al., 1989
778 s Ar IR Brown, Browne, et al., 1989
608 m Ar IR Brown, Browne, et al., 1989
392 w Ar IR Brown, Browne, et al., 1989

Additional references: Jacox, 1994, page 419

Notes

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

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.

Simon, Munzel, et al., 1990
Simon, J.G.G.; Munzel, N.; Schweig, A., Matrix isolation photochemistry: photoequilibrium between transient o-benzyne, carbon monoxide and transient cyclopentadienylideneketene in an argon matrix, Chem. Phys. Lett., 1990, 170, 2-3, 187, https://doi.org/10.1016/0009-2614(90)87113-6 . [all data]

Brown, Browne, et al., 1989
Brown, R.F.C.; Browne, N.R.; Coulston, K.J.; Eastwood, F.W.; Irvine, M.J.; Pullin, A.D.E.; Wiersum, U.E., Cyclopentadienylideneethenone: Pyrolytic Generation and Argon Matrix Infrared Spectroscopic Study, Aust. J. Chem., 1989, 42, 8, 1321, https://doi.org/10.1071/CH9891321 . [all data]

Radziszewski, Hess, et al., 1992
Radziszewski, J.G.; Hess, B.A., Jr.; Zahradnik, R., Infrared spectrum of o-benzyne: experiment and theory, J. Am. Chem. Soc., 1992, 114, 1, 52, https://doi.org/10.1021/ja00027a007 . [all data]

Chapman, Chang, et al., 1985
Chapman, O.L.; Chang, C.-C.; Kolc, J.; Rosenquist, N.R.; Tomioka, H., Photochemical method for the introduction of strained multiple bonds. Benzyne C .tbd. C stretch, J. Am. Chem. Soc., 1985, 97, 22, 6586, https://doi.org/10.1021/ja00855a055 . [all data]

Dunkin and MacDonald, 1979
Dunkin, I.R.; MacDonald, J.G., J. Chem. Soc., 1979, Chem. Commun. 772. [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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