Mass spectrometric study on the neutral nanocluster [Cd32Se14(SePh)36L4] (L = THF, OPPh3) upon charged ligand exchange

被引：19

作者：

Eichhöfer, A ^{[1
]}

Hampe, O ^{[1
]}

机构：

[1] Forschungszentrum Karlsruhe, Inst Nanotechnol, D-76021 Karlsruhe, Germany

来源：

CHEMICAL PHYSICS LETTERS | 2005年 / 407卷 / 1-3期

关键词：

D O I：

10.1016/j.cplett.2005.03.085

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：

Electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI FT-ICR MS) has been applied to the neutral 1.4 nm sized cluster [Cd32Se14(SePh)(36)(L)(4)] upon targeted exchange of the neutral ligands L by various anionic ligands in solution. Use of SePh- as a 'charging ligand' leads to virtually monodisperse ion beams constituted of the intact cluster as tetra-and tri-anions. An electrostatic model is employed which is consistent with the proposed charge distribution of four excess charges being localized at the corner sites of the tetrahedron. The experimental results suggest a general applicability of charged ligand exchange to obtain monodisperse cluster ion beams. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：186 / 191

页数：6

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