Surface-induced reactions and decomposition of the benzene molecular ion C6H6+: Product ion intensities, angular and translational energy distributions

Wörgötter, R.; Kubišta, Jiřı́; Žabka, Ján; Dolejšek, Z.; Märk, T.D.; Herman, Z.

doi:10.1016/s0168-1176(97)00289-9

Cited by 55 publications

(56 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The product ions should then have approximately the velocity distribution of the [C 2 H 6 O] + parent ion, possibly broadened by translational energy release in the dissociation process, although this energy release should be quite small for the ethanol ion and the dissociations in question. These conclusions are in general agreement with our earlier findings in studies of benzene ion-surface interactions 10 and with other previous work. 12, 13 We did not see any structure in the velocity spectra or any indication of low energy peaks of fragment ions observed in studies of FeCp 2 + or SiMe 3 + dissociation at surfaces and interpreted as dissociations at the surface.…”

Section: Translational Energy Distributions Of Product Ionssupporting

confidence: 94%

“…It appears that the exoergicity of the reaction tends to increase the translational energy of the SIR-produced ions. It is worth mentioning that in our previous study of benzene 10 we observed that the energy distributions of products of endoergic surface reactions of H-atom transfer were shifted to lower energies with respect to the peak of unimolecular decompositions of the surface-excited molecular [C 6 H 6 ] +• projectile. Figure 7(a-c) shows, in polar plots, the angular distributions of molecular and fragment ions from interaction of a 22.…”

Section: Translational Energy Distributions Of Product Ionsmentioning

confidence: 78%

“…The quasielastically scattered projectile ions, however, peaked closer to the surface, as observed earlier in our study of the benzene ion collisions. 10 The peak of the angular distributions, (Θ′ N ) max , was located at 68°, 62°and 58°for impact angles Φ N = 80°, 60°and 40°, respectively, being thus larger than (Φ N = 80°), about the same (Φ N = 60°) and smaller (Φ N = 40°) than the specular reflection angle Θ′ NS (thick arrow in Figure 7) for the three incident angles, respectively.…”

Section: Translational Energy Distributions Of Product Ionsmentioning

confidence: 89%

“…The modification 10 consisted in replacing the crossed beam arrangement with a stainless-steel target from which projectile ions were scattered and detected. In the present experiments (Figure 1), projectile ions were formed by bombardment of the ethanol molecules in a low-pressure ion source by 120 eV electrons.…”

Section: Methodsmentioning

confidence: 99%

“…To see if the relations hold for impact of ions of a considerably different mass, we included our earlier data from collisions of the benzene molecular ion with a stainless-steel surface 10 in the analysis. The data for m/z 78 (scattered undissociated projectile), 77, and 39 (for E tr [C 6 H 6 ] + = 28 eV, Φ N = 45°, (Θ′ N ) max = 65°) are included in Figure 8.…”

Section: Angular Distributions Of Productsmentioning

confidence: 99%

See 4 more Smart Citations

Energy partitioning in collisions of slow polyatomic ions with surfaces: ethanol molecular ions on stainless steel surfaces

Kubišta

Dolejšek

Herman

1998

Eur. J. Mass Spectrom.

View full text Add to dashboard Cite

Mass spectra and translational and angular distributions of product ions formed in interactions of 13-33 eV ethanol molecular ions (C 2 H 6 O +• ), as well as C 2 H 7 O + and C 2 H 5 O + ions, with a stainless steel surface were investigated to determine the partitioning of energy in the collisions with the surface. Distribution functions were derived from the data for the energy fractions going into internal excitation of the projectile, product translational energy and that absorbed by the surface. The peak values of the three energy fractions increased linearly with the incident projectile energy but their mutual ratios did not change. With increasing incident angle, the fraction of internal excitation did not change, the fraction of product translational energy increased, and the fraction absorbed by the surface correspondingly decreased. The ion survival probability increased substantially with increasing incident angle.

show abstract

Section: Translational Energy Distributions Of Product Ionssupporting

confidence: 94%

Section: Translational Energy Distributions Of Product Ionsmentioning

confidence: 78%

Section: Translational Energy Distributions Of Product Ionsmentioning

confidence: 89%

Section: Methodsmentioning

confidence: 99%

Section: Angular Distributions Of Productsmentioning

confidence: 99%

See 3 more Smart Citations

Energy partitioning in collisions of slow polyatomic ions with surfaces: ethanol molecular ions on stainless steel surfaces

Kubišta

Dolejšek

Herman

1998

Eur. J. Mass Spectrom.

View full text Add to dashboard Cite

show abstract

Energy partitioning in the surface-induced dissociation of linear and cyclic protonated peptides at an organic surface

Schultz¹,

Lim²,

Garbis³

et al. 1999

J. Mass Spectrom.

View full text Add to dashboard Cite

C-F and C-C bond activation by transition metals in low energy atomic ion/surface collisions

Evans

Pradeep

Shen

et al. 1999

Rapid Commun. Mass Spectrom.

View full text Add to dashboard Cite

The transition metal ions, Cr Á , MoÁ , W Á and Re , abstract one or more fluorine atoms or C m F n groups (m = 1,2; n = 1-5) in collisions with fluorocarbon self-assembled monolayers (F-SAMs). The number of atoms abstracted increases with collision energy, and with W Á and Re it is possible to maximize a specific scattered product ion by selecting the appropriate collision energy. The collision energy dependence suggests that dissociation of the products of multiple abstractions is not an important source of any of the observed ion/surface reaction products. The ions W Á and Re activate and insert into C-C as well as C-F bonds. In Re collisions, products of C-C bond activation are of comparable intensity to the C-F activation products. The reactivity of the ions towards fluorine abstraction is observed to be Cr. The data are interpreted in terms of reaction at the surface and are rationalized by considering three factors (i) the electronic structures of the ions, (ii) the thermochemistry of fluorine abstraction, and (iii) the degree of orbital overlap of the metal ion and the F-SAM substrate.

show abstract

Surface-induced reactions and decomposition of the benzene molecular ion C6H6+: Product ion intensities, angular and translational energy distributions

Cited by 55 publications

References 7 publications

Energy partitioning in collisions of slow polyatomic ions with surfaces: ethanol molecular ions on stainless steel surfaces

Energy partitioning in collisions of slow polyatomic ions with surfaces: ethanol molecular ions on stainless steel surfaces

Energy partitioning in the surface-induced dissociation of linear and cyclic protonated peptides at an organic surface

C-F and C-C bond activation by transition metals in low energy atomic ion/surface collisions

Contact Info

Product

Resources

About