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用铁核探针和计算方法研究铁双(碳硼烷)配合物 Fe[(CBH)]中铁的分子内旋转和电子态。

Intramolecular rotations and electronic states of iron in the iron bis(dicarbollide) complex Fe[(CBH)] studied by a Fe nuclear probe and computational methods.

机构信息

Laboratory of Medicinal Chemistry, Institute of Medical Biology PAS, Lodowa 106, Łódź 92-232, Poland.

Marian Smoluchowski Institute of Physics, Jagiellonian University, Prof. Stanisława Łojasiewicza 11, Kraków 30-345, Poland.

出版信息

Chem Commun (Camb). 2022 Jan 4;58(3):391-394. doi: 10.1039/d1cc05111c.

DOI:10.1039/d1cc05111c
PMID:34889338
Abstract

Mössbauer spectroscopy of iron(III) bis(dicarbollide) (1) and its adduct (2) revealed low spin Fe in 1 and surprisingly Fe in 2. In 1, the (CBH) groups rotate at room temperature with a frequency of 10 Hz, getting across the energy barrier of 24 meV. Numerical simulations showed a gradient of electric charge in 2, which may explain the Fe-like character in 2.

摘要

穆斯堡尔光谱研究表明,铁(III)双(碳硼烷)(1)及其加合物(2)中的铁为低自旋态。在 1 中,(CBH)基团在室温下以 10 Hz 的频率旋转,越过 24 meV 的能垒。数值模拟显示 2 中存在电荷梯度,这可能解释了 2 中类似铁的特性。

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