Identification of a single light atom within a multinuclear metal cluster using valence-to-core X-ray emission spectroscopy.

Identification of a single light atom within a multinuclear metal cluster using valence-to-core X-ray emission spectroscopy.
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DOI:
10.1021/ic201173j
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发表时间:
2011-11-07
影响因子:
4.6
通讯作者:
DeBeer S
DeBeer S
中科院分区:
化学2区
文献类型:
--
作者:
Delgado-Jaime MU;Dible BR;Chiang KP;Brennessel WW;Bergmann U;Holland PL;DeBeer S

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建立了铁价核Fe Kβ X射线发射光谱(V2 C XES),用于识别轻原子(C. N,O)在复杂的多金属框架内。区分轻原子的能力,特别是在存在较重原子的情况下,是晶体学和EXAFS的一个众所周知的限制。利用V2 C XES对结合配体的电离势的灵敏度,可以观察到结合C、N和O的配体2s电离能中~10 eV的能量位移。由于V2 C XES是一种高能X射线方法,它很容易适用于任何物理形式的样品。因此,这种方法具有很大的应用潜力,涉及小分子存储和激活的多金属无机框架。
Iron valence-to-core Fe Kβ x-ray emission spectroscopy (V2C XES) is established as a means to identify light atoms (C. N, O) within complex multimetallic frameworks. The ability to distinguish light atoms, particularly in the presence of heavier atoms, is a well-known limitation of both crystallography and EXAFS. Using the sensitivity of V2C XES to the ionization potential of the bound ligand energetic shifts of ~10 eV in the ligand 2s ionization energies of bound C, N and O may be observed. As V2C XES is a high-energy X-ray method, it is readily applicable to samples in any physical form. This method thus has great potential for application to multimetallic inorganic frameworks involved in both small molecule storage and activation.
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