Ionic fragmentation versus electron detachment in isolated transition metal complex dianions

被引：33

作者：

Boxford, WE ^{[1
]}

Pearce, JK ^{[1
]}

Dessent, CEH ^{[1
]}

机构：

[1] Univ York, Dept Chem, York YO10 5DD, N Yorkshire, England

来源：

CHEMICAL PHYSICS LETTERS | 2004年 / 399卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2004.10.054

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：

Gas-phase multiply charged anions represent highly energetic species that are susceptible to decay by electron detachment or fragmentation into two ions. The relative activation barriers for decay via these channels have been investigated for IrCl62-, OsCl62-, ReCl62, IrBr62- and PtBr62- using collisional excitation of ions isolated within a quadrupole trap. All of the dianions decayed via ionic fragmentation, demonstrating that the repulsive Coulomb barrier (RCB) for ionic fragmentation lies below the RCB for electron detachment. Our results indicate that ionic fragmentation will represent the preferred lowest energy decay pathway for these, and other, dianions that can dissociate to form stable anions. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：465 / 470

页数：6

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