本文所述为继续前一工作所得结果。研究的四种自由基结构式如下：■四种氮氧自由基的合成如前述,各配制成1×10~(-3)M在乙二醇中的溶液。置入内径约1mm的薄壁GG-17玻璃毛细管中,用JEOL公司JES-FE-IX型波谱仪(X波带、调制频率100kHz)进行ESR测定,使用微波功率1mW及调场宽度1G,沿用前述测定ESR波谱参数的方法。联合使用JES-VT-3A2变温控制器及JES-UCT-2AX变温应接管以改变样品温 This article describes the results of the previous work. The structures of the four free radicals studied are as follows: ■ Synthesis of four nitroxides As described above, solutions of 1 x 10 ~ (-3) M in ethylene glycol each were formulated. ESR measurement was performed on a thin-walled GG-17 glass capillary having an inner diameter of about 1 mm and ESR measurement was carried out using a JEOL JES-FE-IX spectrometer (X-band, modulation frequency: 100 kHz) using microwave power of 1 mW and a field width of 1 G The aforementioned method of determining ESR spectral parameters. Joint use of JES-VT-3A2 temperature controller and JES-UCT-2AX temperature change should take over to change the sample temperature