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Tetracarbon


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:   3Su-


 Energy 
 (cm-1
 Med.   Transition   «lambda»min 
 (nm) 
 «lambda»max 
 (nm) 
 References

To = 26384.9 ± 0.2 gas 3Su--X 334 379 Linnartz, Vaizert, et al., 2000
To = 26323 ± 15 Ne 3Su--X 325 380 Freivogel, Grutter, et al., 1996


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

Sigmag+ 1 Sym. stretch 1821 gas CR Linnartz, Vaizert, et al., 2000
1 Sym. stretch 1822 ± 20 Ne AB Freivogel, Grutter, et al., 1996
2 C-C stretch 869 gas CR Linnartz, Vaizert, et al., 2000
2 C-C stretch 903 ± 20 Ne AB Freivogel, Grutter, et al., 1996
Pig 4 Bend 370 ± 20 H Ne AB Freivogel, Grutter, et al., 1996
Piu 5 Bend 175 ± 20 H Ne AB Freivogel, Grutter, et al., 1996

State:   1Pig


 Energy 
 (cm-1
 Med.   Transition   «lambda»min 
 (nm) 
 «lambda»max 
 (nm) 
 References

To = 11380 gas Xu, Burton, et al., 1997

State:   1Piu


 Energy 
 (cm-1
 Med.   Transition   «lambda»min 
 (nm) 
 «lambda»max 
 (nm) 
 References

To = 9360 ± 160 T gas Xu, Burton, et al., 1997

State:   3Piu


 Energy 
 (cm-1
 Med.   Transition   «lambda»min 
 (nm) 
 «lambda»max 
 (nm) 
 References

T = 7500 ± 160 gas Xu, Burton, et al., 1997

State:   3Og


 Energy 
 (cm-1
 Med.   Transition   «lambda»min 
 (nm) 
 «lambda»max 
 (nm) 
 References

T = 6620 ± 160 gas Xu, Burton, et al., 1997

State:   1Sg+


 Energy 
 (cm-1
 Med.   Transition   «lambda»min 
 (nm) 
 «lambda»max 
 (nm) 
 References

To = 4030 ± 160 T gas Xu, Burton, et al., 1997

State:   1Dg


 Energy 
 (cm-1
 Med.   Transition   «lambda»min 
 (nm) 
 «lambda»max 
 (nm) 
 References

To = 2680 ± 120 gas Arnold, Bradforth, et al., 1991
Xu, Burton, et al., 1997


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

Sigmag+ 1 Sym. stretch 2032 ± 50 gas PE Xu, Burton, et al., 1997
Pig 4 Bend 331 ± 50 gas PE Xu, Burton, et al., 1997

State:   X


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

Sigmag+ 1 Sym. stretch 2057 ± 50 gas PE Arnold, Bradforth, et al., 1991
Xu, Burton, et al., 1997
Sigmau 3 Asym. stretch 1548.61 gas DL Heath and Saykally, 1991
3 Asym. stretch 1547.0 Ne IR Smith, Agreiter, et al., 1994
Forney, Jacox, et al., 1995
Tam, Macler, et al., 1997
Wu, Chen, et al., 2009
3 Asym. stretch 1543.4 Ar IR Shen and Graham, 1989
3 Asym. stretch 1539.5 Kr IR Szczepanski, Ekern, et al., 1996
Pig 4 Bend 352 ± 15 gas PE DL Arnold, Bradforth, et al., 1991
Moazzen-Ahmadi and Thong, 1995
Xu, Burton, et al., 1997
Gakwaya, Abusara, et al., 2004
Piu 5 Bend 160 ± 4 gas DL Moazzen-Ahmadi, Thong, et al., 1994
5 Bend 172.4 Ar IR Withey, Shen, et al., 1991
5 Bend 170.4 Ar IR Withey, Shen, et al., 1991

Additional references: Jacox, 1994, page 181; Jacox, 1998, page 245; Jacox, 2003, page 214; Cheung and Graham, 1989; Jiang and Graham, 1991

Notes

H(1/2)(2nu)
TTentative assignment or approximate value
oEnergy separation between the v = 0 levels of the excited and electronic ground states.

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.

Linnartz, Vaizert, et al., 2000
Linnartz, H.; Vaizert, O.; Motylewski, T.; Maier, J.P., The [sup 3]«SIGMA»[sub u][sup -]<--X [sup 3]«SIGMA»[sub g][sup -] electronic spectrum of linear C[sub 4] in the gas phase, J. Chem. Phys., 2000, 112, 22, 9777, https://doi.org/10.1063/1.481615 . [all data]

Freivogel, Grutter, et al., 1996
Freivogel, P.; Grutter, M.; Forney, D.; Maier, J.P., The 3«SIGMA»u- <-- X3«SIGMA»g- electronic absorption spectrum of linear C4 in a neon matrix, Chem. Phys. Lett., 1996, 249, 3-4, 191, https://doi.org/10.1016/0009-2614(95)01391-1 . [all data]

Xu, Burton, et al., 1997
Xu, C.; Burton, G.R.; Taylor, T.R.; Neumark, D.M., Photoelectron spectroscopy of C[sub 4][sup -], C[sub 6][sup -], and C[sub 8][sup -], J. Chem. Phys., 1997, 107, 9, 3428, https://doi.org/10.1063/1.474715 . [all data]

Arnold, Bradforth, et al., 1991
Arnold, D.W.; Bradforth, S.E.; Kitsopoulos, T.N.; Neumark, D.M., Vibrationally Resolved Spectra of C2-C11 by Anion Photoelectron Spectroscopy, J. Chem. Phys., 1991, 95, 12, 8753, https://doi.org/10.1063/1.461211 . [all data]

Heath and Saykally, 1991
Heath, J.R.; Saykally, R.J., The structure of the C4 cluster radical, J. Chem. Phys., 1991, 94, 4, 3271, https://doi.org/10.1063/1.459797 . [all data]

Smith, Agreiter, et al., 1994
Smith, A.M.; Agreiter, J.; Hartle, M.; Engel, C.; Bondybey, V.E., Rare gas matrix studies of absorption and fluorescence of reactive intermediates formed in discharges through acetylene, Chem. Phys., 1994, 189, 2, 315, https://doi.org/10.1016/0301-0104(94)00299-1 . [all data]

Forney, Jacox, et al., 1995
Forney, D.; Jacox, M.E.; Thompson, W.E., The Infrared and Near-Infrared Spectra of HCC and DCC Trapped in Solid Neon, J. Mol. Spectrosc., 1995, 170, 1, 178, https://doi.org/10.1006/jmsp.1995.1065 . [all data]

Tam, Macler, et al., 1997
Tam, S.; Macler, M.; Fajardo, M.E., Matrix isolation spectroscopy of laser ablated carbon species in Ne, D[sub 2], and H[sub 2] matrices, J. Chem. Phys., 1997, 106, 22, 8955, https://doi.org/10.1063/1.474028 . [all data]

Wu, Chen, et al., 2009
Wu, Y.-J.; Chen, H.-F.; Camacho, C.; Sitek, H.A.; Hsu, S.-C.; Lin, M.-Y.; Chou, S.-L.; Ogilvie, J.F.; Cheng, B.-M., FORMATION AND IDENTIFICATION OF INTERSTELLAR MOLECULE LINEAR C, Astrophys. J., 2009, 701, 1, 8, https://doi.org/10.1088/0004-637X/701/1/8 . [all data]

Shen and Graham, 1989
Shen, L.N.; Graham, W.R.M., Observation of an infrared frequency of the C4 molecule, J. Chem. Phys., 1989, 91, 8, 5115, https://doi.org/10.1063/1.457603 . [all data]

Szczepanski, Ekern, et al., 1996
Szczepanski, J.; Ekern, S.; Chapo, C.; Vala, M., Infrared spectroscopy of matrix-isolated carbon clusters, with emphasis on C8 and C9, Chem. Phys., 1996, 211, 1-3, 359, https://doi.org/10.1016/0301-0104(96)00212-1 . [all data]

Moazzen-Ahmadi and Thong, 1995
Moazzen-Ahmadi, N.; Thong, J.J., Infrared diode laser spectroscopy of C4. The «nu»3 + «nu»4 - «nu»4 sequence band, Chem. Phys. Lett., 1995, 233, 4, 471, https://doi.org/10.1016/0009-2614(94)01467-A . [all data]

Gakwaya, Abusara, et al., 2004
Gakwaya, S.; Abusara, Z.; Moazzen-Ahmadi, N., Vibrational hot bands of linear C4 and C5 arising from a bending vibration with two quanta in the lowest bend: the («nu»3+2«nu»5)-2«nu»5 band of C4 and the («nu»3+2«nu»7)-2«nu»7 band of C5, Chem. Phys. Lett., 2004, 398, 4-6, 564, https://doi.org/10.1016/j.cplett.2004.09.130 . [all data]

Moazzen-Ahmadi, Thong, et al., 1994
Moazzen-Ahmadi, N.; Thong, J.J.; McKellar, A.R.W., Infrared diode laser spectroscopy of the «nu»3 fundamental and «nu»3+«nu»5-«nu»5 sequence bands of the C4 radical in a hollow cathode discharge, J. Chem. Phys., 1994, 100, 6, 4033, https://doi.org/10.1063/1.466340 . [all data]

Withey, Shen, et al., 1991
Withey, P.A.; Shen, L.N.; Graham, W.R.M., Fourier transform far infrared spectroscopy of a C4 bending mode, J. Chem. Phys., 1991, 95, 2, 820, https://doi.org/10.1063/1.461088 . [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]

Jacox, 1998
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules: supplement A, J. Phys. Chem. Ref. Data, 1998, 27, 2, 115-393, https://doi.org/10.1063/1.556017 . [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]

Cheung and Graham, 1989
Cheung, H.M.; Graham, W.R.M., Electron-spin-resonance characterization of nonlinear C4 trapped in solid argon, J. Chem. Phys., 1989, 91, 11, 6664, https://doi.org/10.1063/1.457385 . [all data]

Jiang and Graham, 1991
Jiang, Q.; Graham, W.R.M., Electron-paramagnetic-resonance study of the structure of C4 in solid Ne, J. Chem. Phys., 1991, 95, 5, 3129, https://doi.org/10.1063/1.460870 . [all data]


Notes

Go To: Top, Vibrational and/or electronic energy levels, References