X-RAY PHOTOELECTRON-SPECTRA OF COBALT COMPOUNDS
X-RAY PHOTOELECTRON-SPECTRA OF COBALT COMPOUNDS
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DOI：
10.1080/00268977400101251
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发表时间：
1974-01-01
影响因子：
1.7
通讯作者：
WOOLSEY, IS
中科院分区：
文献类型：
--
作者：
FROST, DC;MCDOWELL, CA;WOOLSEY, IS
本文研究了一系列钴（Ⅱ）和钴（Ⅲ）配合物的X射线光电子能谱。在高自旋钴（II）化合物的情况下，2 p、3s和3 p峰观察到强烈的卫星线，但对于低自旋钴（III）络合物则没有。2 p能级的卫星最好解释为产生于震荡过程，而3s和3 p能级的卫星被认为主要是产生于能级的多重态（交换）分裂。2 p能级的多重态分裂很小，这是高自旋钴（II）化合物的2 p（1/2），2 p（3/2）自旋轨道能级的二重态分离增加的原因。对于高自旋钴（II）化合物的2 p、3s和3 p能级，钴的化学位移不同。抗磁性钴（III）和低自旋钴（II）配合物的2 p和3 p能级的那些是相等的。在高自旋钴（II）化合物的情况下的差异被认为是由于存在未配对的3d电子。
The X-ray photoelectron spectra of a variety of cobalt(II) and cobalt(III) complexes have been investigated. Intense satellite lines were observed for the 2p, 3s and 3p peaks in the case of the high spin cobalt(II) compounds, but not for low spin cobalt(III) complexes. The satellites of the 2p levels are best explained as arising from shake-up processes, whereas those of the 3s and 3p levels are thought to arise largely from multiplet (exchange) splitting of the levels. Multiplet splitting of the 2p level is small and responsible for an increase in the doublet separation of the 2p1/2, 2p3/2spin-orbit levels of the high spin cobalt(II) compounds. The chemical shifts for cobalt differ for the 2p, 3s and 3p levels of the high spin cobalt(II) compounds. Those of the 2p and 3p levels of diamagnetic cobalt(III) and low spin cobalt(II) complexes are equal. The difference in the case of the high spin cobalt(II) compounds is thought to be due to the presence of unpaired 3d electrons.