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杯[4]芳烃双自由基的合成与自旋-自旋交换相互作用。

Syntheses and spin-spin exchange interactions of calix[4]arene biradicals.

作者信息

Hu Xiaojun, Yang Haijun, Li Yong

机构信息

Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, PR China.

出版信息

Spectrochim Acta A Mol Biomol Spectrosc. 2008 Jul;70(2):439-44. doi: 10.1016/j.saa.2007.12.012. Epub 2007 Dec 28.

DOI:10.1016/j.saa.2007.12.012
PMID:18249580
Abstract

Three novel paramagnetic calix[4]arenes (2, 3 and 4) with two opposite nitroxide radicals on the upper rims were synthesized and characterized. The through-space spin-spin exchange interactions of these calixarene biradicals were investigated, and found to be affected by many factors, such as molecular conformational flexibility, steric hindrance, temperature, solvent effect and complexation of silver ion.

摘要

合成并表征了三种新型的杯[4]芳烃（2、3和4），它们在上缘带有两个相对的氮氧自由基。研究了这些杯芳烃双自由基的空间自旋-自旋交换相互作用，发现其受到许多因素的影响，如分子构象灵活性、空间位阻、温度、溶剂效应和银离子络合作用。

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