Fe（III）自旋交叉配位盐金属中心的手性效应。

IF 2.6 4区物理与天体物理 Q3 PHYSICS, CONDENSED MATTER

Journal of Physics: Condensed Matter Pub Date : 2025-01-06 DOI:10.1088/1361-648X/ada338

M Zaid Zaz, Wai Kiat Chin, Gauthami Viswan, Arjun Subedi, Esha Mishra, Kayleigh A McElveen, Binny Tamang, David Shapiro, Alpha T N'Diaye, Rebecca Y Lai, Peter A Dowben

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引用次数: 0

摘要

在Fe（III）自旋交叉配位盐[Fe(qsal)2Ni(dmit)2]和[Fe(qsal)2(TCNQ)2]的x射线吸收光谱中，在Fe 2p3/2core阈值处，在Fe（III）金属中心观察到手性的证据。基于圆偏振x射线吸收数据，发现[Fe(qsal)2Ni(dmit)2]和[Fe(qsal)2(TCNQ)2]的x射线自然圆二色性远比[Fe(qsal)2Cl]强，这表明这种自然圆二色性特征是配体效应，而不仅仅是铁核上八面体对称性丧失的结果。fe2p核对束缚x射线吸收的手性效应越大，在x射线吸收光谱中观察到的fe2p3 /2到2p1/2自旋轨道分裂的扰动越大。

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Chiral effects at the metal center in Fe(III) spin crossover coordination salts.

Evidence of chirality was observed at the Fe metal center in Fe(III) spin crossover coordination salts [Fe(qsal)₂][Ni(dmit)₂] and [Fe(qsal)₂](TCNQ)₂from x-ray absorption (XAS) spectroscopy at the Fe 2p_3/2core threshold. Based on the circularly polarized XAS data, the x-ray natural circular dichroism for [Fe(qsal)₂][Ni(dmit)₂] and [Fe(qsal)₂](TCNQ)₂is far stronger than seen for [Fe(qsal)₂]Cl suggesting this natural circular dichroism signature is a ligand effect rather than a result of just a loss of octahedral symmetry on the Fe core. The larger the chiral effects in the Fe 2p core to bound XAS, the greater the perturbation of the Fe 2p_3/2to 2p_1/2spin-orbit splitting seen in the XAS spectra.

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来源期刊

Journal of Physics: Condensed Matter 物理-物理：凝聚态物理

CiteScore

5.30

自引率

7.40%

发文量

1288

审稿时长

2.1 months

期刊介绍： Journal of Physics: Condensed Matter covers the whole of condensed matter physics including soft condensed matter and nanostructures. Papers may report experimental, theoretical and simulation studies. Note that papers must contain fundamental condensed matter science: papers reporting methods of materials preparation or properties of materials without novel condensed matter content will not be accepted.