Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Cleavage patterns of carbon clusters from impact-induced fragmentation of C- N, N = 10-50
Authors: Whetten, Robert L.
Yeretzian, Chahan
St. John, Pamela M.
DOI: 10.1016/0168-1176(94)04063-X
Published in: International Journal of Mass Spectrometry
Volume(Issue): 138
Pages: 63
Pages to: 76
Issue Date: 1994
Publisher / Ed. Institution: Elsevier
Publisher / Ed. Institution: Amsterdam
ISSN: 1387-3806
Language: English
Subjects: Surface collisions; Fullerenes
Subject (DDC): 540: Chemistry
Abstract: The preferred fragmentation patterns of negatively charged carbon clusters, C−N have been investigated by cluster—beam impact methods using various surfaces and impact energies (Ei = 0-150 eV). Transitions from one type of cluster structure to another are inferred from the observed change in fragmentation patterns. The results are made possible by the high intact-scattering yield of C−N clusters, and by the competitiveness of fragmentation with electron emission for clusters N < 40. The main inferred structures and diagnostic fragmentation patterns are (i) chain structures (4 < N < 18), which fragment by C(0)3 loss; (ii) ring structures, N ≈ 17-32, reflected by preferential cleavage to give large neutral clusters C(0)14, and C(0)22, (iii) polycyclic or cage structures, which shatter to yield an array of small fragments; and (iv) fullerene-type structures, N > 33, for which electron emission dominates over fragmentation. These results are compared and contrasted with results obtained from other fragmentation and collisional methods.
Fulltext version: Published version
License (according to publishing contract): Licence according to publishing contract
Departement: Life Sciences and Facility Management
Appears in Collections:Publikationen Life Sciences und Facility Management

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