COLLISION-INDUCED DISSOCIATION OF TITANIUM-CARBON CLUSTER CATIONS

被引:42
作者
KERNS, KP
GUO, BC
DENG, HT
CASTLEMAN, AW
机构
[1] Department of Chemistry, Pennsylvania State University, University Park
关键词
D O I
10.1063/1.468113
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Titanium-carbon clusters are investigated by collision induced dissociation (CID) using our newly designed triple quadrupole mass spectrometer coupled with a laser vaporization source. Their fragmentation patterns are determined under various collision conditions. It is observed that the Met-Car Ti 8C12+ mainly loses a neutral metal atom in the primary dissociation step and several metal atoms in sequential dissociation processes. The dissociation threshold of the Met-Car Ti8C 12+ is estimated to be about 9 eV. In addition, several of the larger TixCy+ cluster ions, including those containing nine or ten metal atoms, are found to fragment directly to Ti8C12+ during single step dissociation. Product channels for dissociation of Ti9C12+ establishes the ionization potential for Ti8C12 to be equal to, or less than the IP of the titanium atom. © 1994 American Institute of Physics.
引用
收藏
页码:8529 / 8534
页数:6
相关论文
共 48 条