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首页> 外文期刊>Applied Magnetic Resonance >Ordering of copper(II) dipivaloylmethanate during deposition as an illustration of the capabilities of EPR
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Ordering of copper(II) dipivaloylmethanate during deposition as an illustration of the capabilities of EPR

机译：沉积过程中二新戊酰甲烷磺酸铜（II）的有序排列，以说明EPR的功能

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摘要

A procedure is proposed for a quantitative description of the molecular distribution in partially ranked paramagnetic samples. A computer program for simulation of angular dependences of electron paramagnetic resonance (EPR) spectra is developed for centers with one unpaired electron and one magnetic nucleus. The molecular distribution is approximated by a parametric function; parameter values are fitted from the comparison of the experimental EPR spectra with the simulated ones. The films of copper(II) dipivaloylmethanate obtained by sedimentation on quartz plates were used as a model system for testing this procedure. It was found that during slow sedimentation, a highly ordered thin film covered the sample surface (layer A). Further, another ordered layer (layer B) covered the initial film. Sometimes, as the result of sedimentation, a significant part of a disordered phase appeared. It is shown that all the variety of ranked films of copper(II) dipivaloylmethanate may be described as a sum of the above three phases with different ratios. It was found that a uniform magnetic field has no effect on the layer structures, whereas the magnetic field gradient violates the axial distribution of the molecules. [References: 7]
机译：提出了一种定量描述顺磁样品中分子分布的定量方法。针对带有一个不成对电子和一个磁核的中心，开发了一种用于模拟电子顺磁共振（EPR）光谱的角度依赖性的计算机程序。分子分布由参数函数近似;通过将实验EPR谱与模拟谱进行比较，拟合出参数值。通过在石英板上沉积获得的二新戊酰甲烷磺酸铜（II）膜用作测试该程序的模型系统。发现在缓慢沉降期间，高度有序的薄膜覆盖了样品表面（A层）。此外，另一有序层（层B）覆盖了初始膜。有时，由于沉淀的结果，出现了无序相的很大一部分。结果表明，所有等级排列的二新戊酰甲烷磺酸铜（II）薄膜都可以描述为上述三个比率不同的总和。发现均匀的磁场对层结构没有影响，而磁场梯度违反了分子的轴向分布。 [参考：7]

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