CH3CH2S

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Gas phase ion energetics data

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

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

Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
B - John E. Bartmess

View reactions leading to C2H5S+ (ion structure unspecified)

Electron affinity determinations

EA (eV) Method Reference Comment
1.9530 ± 0.0040LPDJanousek, Reed, et al., 1980B
1.97 ± 0.13D-EABartmess, Scott, et al., 1979value altered from reference due to change in acidity scale; B
1.947 ± 0.013LPESMoran and Ellison, 1988B
1.62182SIPage and Goode, 1969The Magnetron method, lacking mass analysis, is not considered reliable.; B

Ionization energy determinations

IE (eV) Method Reference Comment
9.6 ± 0.8CIELGriffiths, Harris, et al., 1989LL

Vibrational and/or electronic energy levels

Go To: Top, Gas phase ion energetics data, References, Notes

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:   B
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 23519.6 gas B-X 390 600 Black and Jusinski, 1987
Hung, Shen, et al., 1996
Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
a' CH2 wag 1158.9 gas LF Hung, Shen, et al., 1996
CC stretch 1054.6 gas LF Hung, Shen, et al., 1996
CH3 wag 862.8 gas LF Hung, Shen, et al., 1996
CS stretch 420.5 gas LF Black and Jusinski, 1987
Hung, Shen, et al., 1996
CCS bend 256.0 gas LF Hung, Shen, et al., 1996
a CH2 twist 1203.3 gas LF Hung, Shen, et al., 1996
CH2 rock 718.4 gas LF Hung, Shen, et al., 1996

State:   A
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 240 ± 30 gas Cheung, Hsu, et al., 1998

State:   X

Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
a' CH3 s-stretch 2950 T gas LF Hung, Shen, et al., 1996
CH2 bend 1470 ± 10 gas LF Hung, Shen, et al., 1996
CH2 wag 1257 ± 10 gas LF Hung, Shen, et al., 1996
CC stretch 1075 ± 10 gas LF Hung, Shen, et al., 1996
CH3 wag 957 ± 15 gas LF Hung, Shen, et al., 1996
CS stretch 672.4 gas LF Black and Jusinski, 1987
Hung, Shen, et al., 1996
CCS bend 296.0 gas LF Hung, Shen, et al., 1996
a CH3 a-stretch 3050 T gas LF Hung, Shen, et al., 1996
CH2 twist 1290 ± 10 gas LF Hung, Shen, et al., 1996
CH3 wag 890 ± 10 gas LF Hung, Shen, et al., 1996
CH2 rock 478.3 gas LF Hung, Shen, et al., 1996
Torsion 271.9 gas LF Hung, Shen, et al., 1996

Additional references: Jacox, 1994, page 376; Jacox, 1998, page 337; Jacox, 2003, page 353

Notes

TTentative assignment or approximate value
oEnergy separation between the v = 0 levels of the excited and electronic ground states.

References

Go To: Top, Gas phase ion energetics data, 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.

Janousek, Reed, et al., 1980
Janousek, B.K.; Reed, K.J.; Brauman, J.I., Electron photodetachment from mercaptyl anions (RS- electron affinities of mercaptyl radicals and the S-H bond strength in mercaptans), J. Am. Chem. Soc., 1980, 102, 3125. [all data]

Bartmess, Scott, et al., 1979
Bartmess, J.E.; Scott, J.A.; McIver, R.T., Jr., The gas phase acidity scale from methanol to phenol, J. Am. Chem. Soc., 1979, 101, 6047. [all data]

Moran and Ellison, 1988
Moran, S.; Ellison, G.B., Photoelectron Spectroscopy of Sulfur Ions, J. Phys. Chem., 1988, 92, 7, 1794, https://doi.org/10.1021/j100318a021 . [all data]

Page and Goode, 1969
Page, F.M.; Goode, G.C., Negative Ions and the Magnetron., Wiley, NY, 1969. [all data]

Griffiths, Harris, et al., 1989
Griffiths, W.G.; Harris, F.M.; Reid, C.J.; Ballantine, J.A., Ionization energies of mercaptyl radicals measured by charge-inversion energy-loss spectrometry, Org. Mass Spectrom., 1989, 24, 849. [all data]

Black and Jusinski, 1987
Black, G.; Jusinski, L.E., Laser-induced fluorescence of C2H5S radicals, Chem. Phys. Lett., 1987, 136, 3-4, 241, https://doi.org/10.1016/0009-2614(87)80244-0 . [all data]

Hung, Shen, et al., 1996
Hung, W.-C.; Shen, M.-Y.; Yu, C.-H.; Lee, Y.-P., Vibronic analysis of the B 2A´--X 2A´´ laser-induced fluorescence of jet-cooled C2H5S, J. Chem. Phys., 1996, 105, 14, 5722, https://doi.org/10.1063/1.472543 . [all data]

Cheung, Hsu, et al., 1998
Cheung, Y.-S.; Hsu, C.-W.; Ng, C.Y., Non-resonant two photon pulsed field ionization photoelectron study of CH3CH2S formed in the photodissociation of CH3CH2SH, J. Electron Spectrosc. Relat. Phenom., 1998, 97, 1-2, 115, https://doi.org/10.1016/S0368-2048(98)00262-X . [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]

Notes

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