【摘要】 本文研究了(C₆₀)₂-[P（O）（OCH₃）]₂富勒烯双体内的笼间C―C键的热力学性质（该双体的结构详见文献,Chem.Commun.2011,47,6111）。原位、变温电子顺磁共振波谱实验结果表明,该C―C键的键离解能（BDE）为72.4 k J?mol^-1(17.3 kcal?mol^-1),仅约为常见氢键的两倍,或约为常见有机C―C键的五分之一。因此,该二聚体于较高温度时容易发生均裂反应,形成单体自由基;降温时又容易发生自由基聚合反应。基于该笼间C―C键所具有的这些热力学特性,我们对其可被用于制备有序的富勒烯分子元器件等材料作展开讨论。更多还原

【Abstract】 This work studied the thermodynamic properties of a single intercage C―C bond in a [C₆₀]fullerene dimer,(C₆₀)₂-[P（O）（OCH₃）]₂, previously synthesized by Wang et al.（Chem. Commun. 2011, 47, 6111）. Data obtained from in situ variable temperature electron paramagnetic resonance（EPR） indicated a relatively low bond dissociation enthalpy（BDE） for this bond of 72.4 k J ?mol^-1(17.3 kcal ?mol^-1). This value is only approximately twice that of a typical hydrogen bond, or one fifth of the values determined for bonds in diamond or saturated hydrocarbons. The application of this pre-synthesized dimer to the formation of aligned fullerenes is discussed.更多还原