Charge‐State‐Dependent Fragmentation of [2.2]Based Metallosupramolecular Cyclic Helicates in the Gas Phase,ChemPlusChem

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Charge‐State‐Dependent Fragmentation of [2.2]Based Metallosupramolecular Cyclic Helicates in the Gas Phase
ChemPlusChem ( IF 3.0 ) Pub Date : 2020-11-13 , DOI: 10.1002/cplu.202000697
Jana Anhäuser ₁ , Arne Lützen ₁ , Marianne Engeser ₁

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A detailed mass‐spectrometric study provides insight into the gas‐phase fragmentation pathways of a cyclic helicate selectively built from four iron(II) centers and six [2.2]cyclophane‐based ligands through the subcomponent self‐assembly approach. The charge state of the precursor ion, i. e., the number of triflate anions accompanying the metallo‐supramolecular core, has a strong influence on the observed fragmentations. The triply charged ion shows loss of a neutral ligand whereas ions of higher charge fragment by up to three different charge‐separating pathways to minimize the charge density of the ions. Additional subsequent fragmentations of highly charged fragment ions include redox processes as well as splitting of the unusual paracyclophane backbone.

中文翻译：

气相中基于[2.2]的金属超分子环状螺旋分子的电荷状态相关裂解

详尽的质谱研究提供了通过亚组分自组装方法选择性地从四个铁（II）中心和六个基于[2.2]环烷的配体构建的环状螺旋的气相裂解途径的见解。前体离子的电荷状态，即例如，伴随金属超分子核的三氟甲磺酸根阴离子的数量对观察到的碎片有很大的影响。三重带电离子显示中性配体的损失，而高电荷的离子则通过多达三个不同的电荷分离途径使离子的电荷密度最小化。高电荷碎片离子的其他后续碎裂包括氧化还原过程以及不寻常的对环烷骨架的分裂。

更新日期：2020-11-25

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