Methano[60]fullerenes with two and four nitroxide radicals are studied by EPR spectroscopy. It is shown that nitroxide derivatives of fullerene C₆₀ undergo conformational changes in liquid solution. It is established that transitions between the two conformations take place in the case of the biradical adduct of C₆₀ fullerene. For the tetraradical adduct in the trans-3 position, it is shown that the biradicals do not interact and behave independently; therefore, the two-conformational model provides a good description of the experimental data. A more complicated situation is implemented for the tetraradical adduct in the equatorial position. The biradicals are not independent for this system, and their interaction leads to an increase in the number of possible conformations. Thermodynamic parameters for these systems are calculated.

通过 EPR 光谱研究了具有两个和四个氮氧自由基的甲烷 [60] 富勒烯。结果表明富勒烯C _{60 的}氮氧化物衍生物在液体溶液中发生构象变化。已经确定，在 C ₆₀的双自由基加合物的情况下，两种构象之间会发生转变富勒烯。对于位于 trans-3 位置的四价加合物，表明双价不相互作用且独立行为；因此，二构象模型很好地描述了实验数据。对于赤道位置的四价加合物，实现了更复杂的情况。该系统中的双自由基不是独立的，它们的相互作用导致可能的构象数量增加。计算这些系统的热力学参数。