Ionic fragmentation versus electron detachment in isolated transition metal complex dianions

W E  Boxford; J K  Pearce; C E H  Dessent

doi:10.1016/j.cplett.2004.10.054

Ionic fragmentation versus electron detachment in isolated transition metal complex dianions

W E Boxford, J K Pearce, C E H Dessent

Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Pages (from-to)	465-470
Number of pages	6
Journal	Chemical Physics Letters
Volume	399
Issue number	4-6
DOIs	https://doi.org/10.1016/j.cplett.2004.10.054
Publication status	Published - 1 Dec 2004

Keywords

MULTIPLY-CHARGED ANIONS
GAS-PHASE
DISSOCIATION
ATTACHMENT
STABILITY
CLUSTER
TRAP

Access to Document

10.1016/j.cplett.2004.10.054

http://dx.doi.org/10.1016/j.cplett.2004.http://dx.doi.org/10.054

Cite this

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title = "Ionic fragmentation versus electron detachment in isolated transition metal complex dianions",

abstract = "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.",

keywords = "MULTIPLY-CHARGED ANIONS, GAS-PHASE, DISSOCIATION, ATTACHMENT, STABILITY, CLUSTER, TRAP",

author = "Boxford, {W E} and Pearce, {J K} and Dessent, {C E H}",

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journal = "Chemical Physics Letters",

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TY - JOUR

T1 - Ionic fragmentation versus electron detachment in isolated transition metal complex dianions

AU - Boxford, W E

AU - Pearce, J K

AU - Dessent, C E H

PY - 2004/12/1

Y1 - 2004/12/1

N2 - 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.

AB - 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.

KW - MULTIPLY-CHARGED ANIONS

KW - GAS-PHASE

KW - DISSOCIATION

KW - ATTACHMENT

KW - STABILITY

KW - CLUSTER

KW - TRAP

U2 - 10.1016/j.cplett.2004.10.054

DO - 10.1016/j.cplett.2004.10.054

M3 - Article

SN - 0009-2614

VL - 399

SP - 465

EP - 470

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 4-6

ER -