Hydrogen atom elimination from polycyclic aromatic hydrocarbons with sustained off-resonance irradiation: a new approach to produce carbon/hydrogen cluster cations CnHx+

Guo X, Sievers HL, Grützmacher H-F (1999)
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY 185-187: 1-10.

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Abstract
The stepwise elimination of hydrogen atoms from nine polycyclic aromatic hydrocarbons (PAHs) was investigated by the collision-induced dissociation of the sustained off-resonance irradiation (SORI-CID) technique of Fourier transform ion cyclotron resonance mass spectrometry, In every case the application of sequential SORI-CID resulted in the predominant loss of a single hydrogen atom from the parent ions, and for coronene, perylene, and benz[a]anthracene, this eventually produced pure carbon cluster ions C-n(.+). No carbon cluster ions were observed for small PAHs because of competing fragmentations or insufficient intensities of the parent ions. As a common feature of the larger polycyclic aromatic hydrocarbons studied, hydrogenated carbon cluster ions CnH5+ were produced smoothly after elimination of five hydrogen atoms (from pyrene, C16H10, and fluorene, C13H10) or of seven hydrogen atoms (from coronene, C24H12, perylene, C20H12, benz[a]anthracene, C18H12, chrysene, C18H12, and triphenylene, C18H12), However, uncomplicated further loss of hydrogen atoms to produce cluster ions CnH4+ (or CnH3+) was observed only for benz[a]anthracene, chrysene, and triphenylene. The different dissociations of CnHx+ with odd and even numbers of hydrogen atoms and the difficulty to form CnHx+ (0 less than or equal to x less than or equal to 4) by multisteps of single hydrogen elimination are discussed. The latter observation may be attributed to characteristically different structures of hydrogenated carbon cluster ions CnHx+ with x greater than or equal to 5 and x less than or equal to 4. (Int J Mass Spectrom 185/186/187 (1999) 1-10) (C) 1999 Elsevier Science B.V.
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Guo X, Sievers HL, Grützmacher H-F. Hydrogen atom elimination from polycyclic aromatic hydrocarbons with sustained off-resonance irradiation: a new approach to produce carbon/hydrogen cluster cations CnHx+. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY. 1999;185-187:1-10.
Guo, X., Sievers, H. L., & Grützmacher, H. - F. (1999). Hydrogen atom elimination from polycyclic aromatic hydrocarbons with sustained off-resonance irradiation: a new approach to produce carbon/hydrogen cluster cations CnHx+. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, 185-187, 1-10.
Guo, X., Sievers, H. L., and Grützmacher, H. - F. (1999). Hydrogen atom elimination from polycyclic aromatic hydrocarbons with sustained off-resonance irradiation: a new approach to produce carbon/hydrogen cluster cations CnHx+. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY 185-187, 1-10.
Guo, X., Sievers, H.L., & Grützmacher, H.-F., 1999. Hydrogen atom elimination from polycyclic aromatic hydrocarbons with sustained off-resonance irradiation: a new approach to produce carbon/hydrogen cluster cations CnHx+. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, 185-187, p 1-10.
X. Guo, H.L. Sievers, and H.-F. Grützmacher, “Hydrogen atom elimination from polycyclic aromatic hydrocarbons with sustained off-resonance irradiation: a new approach to produce carbon/hydrogen cluster cations CnHx+”, INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, vol. 185-187, 1999, pp. 1-10.
Guo, X., Sievers, H.L., Grützmacher, H.-F.: Hydrogen atom elimination from polycyclic aromatic hydrocarbons with sustained off-resonance irradiation: a new approach to produce carbon/hydrogen cluster cations CnHx+. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY. 185-187, 1-10 (1999).
Guo, Xinghua, Sievers, Heinrich L., and Grützmacher, Hans-Friedrich. “Hydrogen atom elimination from polycyclic aromatic hydrocarbons with sustained off-resonance irradiation: a new approach to produce carbon/hydrogen cluster cations CnHx+”. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY 185-187 (1999): 1-10.
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