Bond dissociation and internal energies of the gas phase TiCln+ ions formed by 70 eV electron impact ionization:: an ion beam study

被引:2
|
作者
Kneen, KR [1 ]
Leroi, GE [1 ]
Allison, J [1 ]
机构
[1] Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA
关键词
chlorotitanium ions; collision-induced dissociation;
D O I
10.1016/S1387-3806(98)14238-0
中图分类号
O64 [物理化学(理论化学)、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号
070203 ; 070304 ; 081704 ; 1406 ;
摘要
An ion beam instrument has been constructed that utilizes a unique, simple ion deceleration lens. We demonstrate here that the kinetic energies of the ions formed can be determined accurately and precisely over a range of energies, that endothermic processes can be characterized, and that the instrument exhibits high product ion collection efficiencies. Results of collision-induced dissociation studies of the TiCln+ ions (rt = 1-4), generated by 70 eV electron impact ionization, are presented here. The results are compared with those obtained from threshold measurements, and indicate that these ions are formed with substantial average interval energies. This information is useful, since the rich gas phase chemistry of TiCln+ ions with organic molecules reported to date involves reactant ions that have not been thermalized. (C) 1999 Elsevier Science B.V.
引用
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页码:163 / 173
页数:11
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