MeN radical

Gas phase ion energetics 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: John E. Bartmess

View reactions leading to CH3N+ (ion structure unspecified)

Electron affinity determinations

EA (eV) Method Reference Comment
0.0220 ± 0.0090LPESTravers, Cowles, et al., 1999For MeN., singlet 1.352 eV up from triplet

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 = 31830.913 ± 0.012 gas A-X 288 356 Franken, Perner, et al., 1970
Carrick and Engelking, 1984
Carrick, Brazier, et al., 1987
Chappell and Engelking, 1988
Brazier, Carrick, et al., 1992
Shang, Yu, et al., 1995
Shang, Gao, et al., 1997
To = 31576 ± 20 N2 A-X 281 317 Ferrante, 1987
Ferrante, 1991
Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
a1 1 CH3 stretch 2943 gas LF Shang, Yu, et al., 1995
Shang, Gao, et al., 1997
2 CH3 deform. 1239 gas LF Shang, Yu, et al., 1995
2 CH3 deform. 1166 T N2 AB Ferrante, 1991
3 CN stretch 758 ± 4 gas UV Franken, Perner, et al., 1970
Carrick and Engelking, 1984
3 CN stretch 755 ± 22 N2 AB Ferrante, 1987
Ferrante, 1991
e 5 CH3 deform. 1500 T gas LF Shang, Yu, et al., 1995
6 CH3 rock 728 ± 4 gas EM Chappell and Engelking, 1988

State:   a
 Energy 
 (cm-1) 		  Med.   Transition   λmin 
 (nm) 		  λmax 
 (nm) 		  References
To = 10905 ± 90 gas Travers, Cowles, et al., 1999, 2

State:   X

Vib. 
sym. 		  No.   Approximate 
 type of mode 		  cm-1   Med.   Method   References
a1 1 CH s-stretch 2943 ± 4 gas EM Carrick and Engelking, 1984
Chappell and Engelking, 1988
2 CH3 deform. 1349 ± 4 gas EM Carrick and Engelking, 1984
Chappell and Engelking, 1988
3 CN stretch 1040 ± 4 gas EM Carrick and Engelking, 1984
Chappell and Engelking, 1988
Shang, Gao, et al., 1997
3 CN stretch 1029 N2 AB Ferrante, 1987
e 4 CH3 a-stretch 2989 ± 4 gas EM Chappell and Engelking, 1988
5 CH3 deform. 1490 ± 4 gas EM Chappell and Engelking, 1988
6 CH3 rock 903 ± 8 gas EM Carrick and Engelking, 1984
Chappell and Engelking, 1988

Additional references: Jacox, 1994, page 234; Jacox, 1998, page 269; Jacox, 2003, page 256; Ying, Xia, et al., 1996

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, NIST Free Links, Notes

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

Travers, Cowles, et al., 1999
Travers, M.J.; Cowles, D.C.; Clifford, E.P.; Ellison, G.B.; Engelking, P.C., Photoelectron spectroscopy of the CH3N- ion, J. Chem. Phys., 1999, 111, 12, 5349-5360, https://doi.org/10.1063/1.479795 . [all data]

Franken, Perner, et al., 1970
Franken, Th.; Perner, D.; Bosnali, M.W., Z. Naturforsch., 1970, 25a, 151. [all data]

Carrick and Engelking, 1984
Carrick, P.G.; Engelking, P.C., The electronic emission spectrum of methylnitrene, J. Chem. Phys., 1984, 81, 4, 1661, https://doi.org/10.1063/1.447891 . [all data]

Carrick, Brazier, et al., 1987
Carrick, P.G.; Brazier, C.R.; Bernath, P.F.; Engelking, P.C., The structure of the methylnitrene radical, J. Am. Chem. Soc., 1987, 109, 17, 5100, https://doi.org/10.1021/ja00251a008 . [all data]

Chappell and Engelking, 1988
Chappell, E.L.; Engelking, P.C., Methylnitrene free radical. Ground state vibrational fundamentals and harmonic force field from jet-cooled emission spectra of the A 3E--X 3A2 band system, J. Chem. Phys., 1988, 89, 10, 6007, https://doi.org/10.1063/1.455415 . [all data]

Brazier, Carrick, et al., 1992
Brazier, C.R.; Carrick, P.G.; Bernath, P.F., Rotational analysis of the 000 band of the A 3E--X 3A2 system of methylnitrene, J. Chem. Phys., 1992, 96, 2, 919, https://doi.org/10.1063/1.462113 . [all data]

Shang, Yu, et al., 1995
Shang, H.; Yu, C.; Ying, L.; Zhao, X., Investigation of the A 3E↔X 3A2 system of methylnitrene radical by laser spectroscopy, J. Chem. Phys., 1995, 103, 11, 4418, https://doi.org/10.1063/1.470682 . [all data]

Shang, Gao, et al., 1997
Shang, H.; Gao, R.; Ying, L.; Zhao, X.; Tang, Y., Laser induced dispersed fluorescence spectra of CH3N radical and the lifetime of its Ã3E state, Chem. Phys. Lett., 1997, 267, 3-4, 345, https://doi.org/10.1016/S0009-2614(97)00091-2 . [all data]

Ferrante, 1987
Ferrante, R.F., Spectroscopy of matrix-isolated methylnitrene, J. Chem. Phys., 1987, 86, 1, 25, https://doi.org/10.1063/1.452775 . [all data]

Ferrante, 1991
Ferrante, R.F., Vibrational frequencies in the A 3E state of methylnitrene, J. Chem. Phys., 1991, 94, 6, 4678, https://doi.org/10.1063/1.460600 . [all data]

Travers, Cowles, et al., 1999, 2
Travers, M.J.; Cowles, D.C.; Clifford, E.P.; Ellison, G.B.; Engelking, P.C., Photoelectron spectroscopy of the CH[sub 3]N[sup -] ion, J. Chem. Phys., 1999, 111, 12, 5349, https://doi.org/10.1063/1.479795 . [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]

Ying, Xia, et al., 1996
Ying, L.; Xia, Y.; Shang, H.; Zhao, X.; Tang, Y., Photodissociation of methylazide: Observation of triplet methylnitrene radical, J. Chem. Phys., 1996, 105, 14, 5798, https://doi.org/10.1063/1.472423 . [all data]

Notes

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