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Electron ionization mass spectrometry of synthetic C 60
Author(s) -
Luffer Debra R.,
Schram Karl H.
Publication year - 1990
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1290041218
Subject(s) - chemistry , fragmentation (computing) , electron ionization , molecule , mass spectrometry , ionization , ion , analytical chemistry (journal) , chemical ionization , organic chemistry , chromatography , computer science , operating system
Novel carbon clusters isolated in the solid phase have been characterized by electron ionization (EI) mass spectrometry. The crystalline material contains the C 60 and C 70 molecules in a ratio of 37:1. Both of these molecules form singly charged ions that appear at m/z 720 and 840, respectively, and doubly charged ions that appear at m/z 360 and 420, respectively. Only the C 60 molecule produces the triply charged species, at m/z 240. C 60 undergoes fragmentation by losing successive multiples of C 2 through C 16 . The C 70 molecule only loses the fragments C 2 and C 4 . Collisionally activated decomposition of these molecules in the first field‐free region did not reveal any more extensive fragmentation than was observed under EI conditions.