C5O2


Phase change data

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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: William E. Acree, Jr., James S. Chickos

Enthalpy of vaporization

ΔvapH (kcal/mol) Temperature (K) Method Reference Comment
1.1258.AStephenson and Malanowski, 1987Based on data from 186. to 273. K. See also Klemenc and Wagner, 2006.

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

Txd = 43500 Ar Maier, Reisenauer, et al., 1988

State:   X


Vib. 
sym. 
 No.   Approximate 
 type of mode 
 cm-1   Med.   Method   References

Σu+ 4 2242.13 gas IR Holland, Winnewisser, et al., 1988
Petry, Klee, et al., 2002
4 2213.0 vs Ar IR Maier, Reisenauer, et al., 1988
5 2065.56 gas IR Holland, Winnewisser, et al., 1988
Petry, Klee, et al., 2002
5 2058.7 m Ar IR Maier, Reisenauer, et al., 1988
6 1152 gas IR Holland, Winnewisser, et al., 1988
6 1144.1 w Ar IR Maier, Reisenauer, et al., 1988
Πu 9 542 gas IR Holland, Winnewisser, et al., 1988
9 539.0 w Ar IR Maier, Reisenauer, et al., 1988
10 474 gas IR Holland, Winnewisser, et al., 1988
10 470.0 w Ar IR Maier, Reisenauer, et al., 1988

Additional references: Jacox, 1994, page 370

Notes

wWeak
mMedium
vsVery strong
xEnergy separation between the band maximum of the excited electronic state and the v = 0 level of the ground state.
dPhotodissociation threshold

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.

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

Klemenc and Wagner, 2006
Klemenc, Alfons; Wagner, Georg, Pentacarbondioxyd, O:C:C:C:C:C:O, Ber. dtsch. Chem. Ges. A/B, 2006, 70, 9, 1880-1882, https://doi.org/10.1002/cber.19370700909 . [all data]

Maier, Reisenauer, et al., 1988
Maier, G.; Reisenauer, H.P.; Schafer, U.; Balli, H., C5O2 (1,2,3,4-Pentatetraen-1,5-dion), ein neues Oxid des Kohlenstoffs, Angew. Chem., 1988, 100, 4, 590, https://doi.org/10.1002/ange.19881000421 . [all data]

Holland, Winnewisser, et al., 1988
Holland, F.; Winnewisser, M.; Maier, G.; Reisenauer, H.P.; Ulrich, A., The high-resolution Fourier transform infrared spectrum of the ν4 band system of OCCCCCO, J. Mol. Spectrosc., 1988, 130, 2, 470, https://doi.org/10.1016/0022-2852(88)90094-X . [all data]

Petry, Klee, et al., 2002
Petry, R.; Klee, S.; Lock, M.; Winnewisser, B.P.; Winnewisser, M., Spherical mirror multipass system for FTIR jet spectroscopy: application to the rovibrationally resolved spectrum of OC5O, J. Mol. Struct., 2002, 612, 2-3, 369, https://doi.org/10.1016/S0022-2860(02)00146-1 . [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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