A Weak Intercage C - C Bond in a [C-60]fullerene Dimer Studied by In situ Variable Temperature EPR Spectroscopy

作者：Tan Tian; Yang Jia-Hui; Zhu Chun-Hua; Wang Guan-Wu; Chen Jia-Fu; Su Ji-Hu^*

来源：Acta Physico - Chimica Sinica, 2016, 32(8): 1929-1932.

DOI：10.3866/PKU.WHXB201605092

• [C-60]fullerene dimer
• Singly intercage C - C bond
• Thermodynamic property
• Bond dissociation enthalpy
• Electron paramagnetic resonance spectroscopy

This work studied the thermodynamic properties of a single intercage C - C bond in a [C-60]fullerene dimer, (C-60)(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 kJ . 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.

• 出版日期2016-8-15
• 单位中国科学技术大学