Investigation of the High-Temperature Spin-Transition of a Mononuclear Iron(II) Complex Using X-ray Photoelectron Spectroscopy,Inorganic Chemistry

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Investigation of the High-Temperature Spin-Transition of a Mononuclear Iron(II) Complex Using X-ray Photoelectron Spectroscopy
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2018-05-18 00:00:00 , DOI: 10.1021/acs.inorgchem.8b00576
Alexander R. Craze ₁ , Kyle J. Howard-Smith ₁ , Mohan M. Bhadbhade ₂ , Outi Mustonen ₂ , Cameron J. Kepert ₃ , Christopher E. Marjo ₂ , Feng Li ₁

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This study presents a new mononuclear complex (1) of the form [FeL](BF₄)₂, incorporating the thiazolylimine donor moiety, which was found to exhibit a high-temperature spin-transition. The effect of scan rate was investigated, with magnetic susceptibility being measured at 4, 2, and 1 K min^–1. The magnetic susceptibility results were confirmed by variable temperature X-ray photoelectron spectroscopy (XPS) (100, 270, 400, and 500 K) and single crystal X-ray diffraction (150 and 400 K) experiments. A rare example of a high-temperature (400 K) single crystal structure of 1 has been reported. The high-spin fraction was calculated indirectly from XPS data, presenting a method for analyzing the spin-state in the surface layers of spin-crossover materials.

中文翻译：

X射线光电子能谱研究单核铁（II）配合物的高温自旋转变

这项研究提出了一种新的[Fe L ]（BF ₄）₂形式的单核络合物（1），其中掺入了噻唑基亚胺供体部分，发现具有高温自旋转变。研究了扫描速率的影响，在4、2和1 K min ^–1处测量了磁化率。通过可变温度X射线光电子能谱（XPS）（100、270、400和500 K）和单晶X射线衍射（150和400 K）实验确认了磁化率结果。高温的一个罕见的例子（400 K）的单晶结构1已经被报告了。高自旋分数由XPS数据间接计算得出，提出了一种分析自旋交叉材料表层自旋态的方法。

更新日期：2018-05-18

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