Exploring the AnionâCation Interaction in<i>m</i>-Terphenyltetrafluorosilicates by Using Multinuclear NMR Spectroscopy, X-ray Diffraction, and ICR-FT-MS
作者:Stefan Spirk、Ferdinand Belaj、Martin Nieger、Harald Köfeler、Geraldâ
N. Rechberger、Rudolf Pietschnig
DOI:10.1002/chem.200900915
日期:2009.9.21
The synthesis of a series of m‐terphenyl‐substituted tetrafluorosilicates with different cations (Na+, K+, Rb+, Cs+, Ag+, Tl+) is described and the interactions between the anion and cation are investigated in the solid, solution, and gas states by using multinuclear NMR spectroscopy, X‐ray diffraction, and ion cyclotron resonance Fourier‐transform mass spectrometry (ICR‐FT‐MS). In solution, heteronuclear
一系列的合成米用不同的阳离子( -三联苯取代tetrafluorosilicates的Na +,K +,RB +,铯+,银+,铊+进行了描述),并使用多核NMR光谱,X射线衍射和离子回旋共振傅里叶变换质谱(ICR-FT-MS)研究了固体,溶液和气体状态下阴离子与阳离子之间的相互作用。在溶液中,异核NMR光谱参数仅显示出对阳离子性质的有限敏感性,此外,这可能会受到溶剂效应的影响。从X射线衍射研究获得的结构数据中观察到更明显的影响,这与ESIMS的实验气相数据非常吻合。ESIMS还揭示了[M(DmpSiF 4)2 ]类型的二聚体的存在- (Dmp = 2,6-dimesitylphenyl),其稳定性由归一化碰撞能量实验确定。