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Collision-induced dissociation of C60-: Effect of energy-coupling processes on the dissociation dynamics (1995)

Mathur, D. ; Brink, C. ; Hvelplund, P. ; [et al.]

New York, NY : Wiley-Blackwell

Rapid Communications in Mass Spectrometry 9 (1995), S. 114-118

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ISSN: 0951-4198

Keywords: Chemistry ; Analytical Chemistry and Spectroscopy

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Physics

Notes: Dissociation of C60- ions induced in 30 keV collisions with atomic and molecular gases has been studied. The pattern of negativeion formation from C60- precursors is found to be distinctly different from that obtained for positive-ion fragments from C60+ precursors in that the collision-induced dissociation spectrum in the former case is dominated by small negative clusters, presumably of linear geometry, Simple arguments utilizing the relationship of electrostatic properties of different molecular structures to their electron affinities and ionization energies have been invoked to rationalize these observations. The difference in the dissociation dynamics of C60- and C60+ ions is discussed in terms of competition between different energy-coupling schemes involving either electronic degrees of freedom or nuclear (vibrational) degrees of freedom.

Additional Material: 4 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/rcm.1290090203

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Resonance Raman spectrum of the transient dimethylsulfide dimer radical cation |(CH3)2S|2+· (1981)

Wilbrandt, R. ; Jensen, N. H. ; Pagsberg, P. ; [et al.]

Chichester [u.a.] : Wiley-Blackwell

Journal of Raman Spectroscopy 11 (1981), S. 24-26

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ISSN: 0377-0486

Keywords: Chemistry ; Analytical Chemistry and Spectroscopy

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology , Physics

Notes: The resonance Raman spectrum of the transient thioether radical cation dimer complex |(CH3)2S|2+·, generated by electron irradiation of an aqueous solution of dimethylsulfide and recorded by optical multichannel detection, is reported. Vibrational bands at 276 cm-1 and 139 cm-1 were detected and are assigned to the stretching mode of the quasi-three-electron S—S bond and a δ(CSS) deformation mode, respectively.

Additional Material: 2 Ill.