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碱金属-C_(60)负离子盐是C_(60)合成化学中重要的前体物质.例如,利用特定氧化态的C_(60)负离子可望实现对碳笼的高选择性化学修饰.C_(60)与碱金属之间的电子转移反应通常在气-气相或固-气相中进行,该方法的主要缺点在于:需要较高的反应温度(200～400℃)和较长的反应时间(10～15d).虽然有C_(60)和碱金属在四氢呋喃(THF)溶液中直接反应的报道,但由于起始原料都不溶于THF,因此需借助长时间强超声振荡来促进它们之间的电子转移,从而使电子转移数目难以控制.我们发现,常温下1-甲基萘作为电子传递媒介体,能有效促进碱金属-C_(60)之间的电子转移,该反应具有条件温和、速度快、电子转移数目可精确控制等优点,为进一步研究碱金属-C_(60)负离子盐的物理、化学性质提供了方便.
Alkali metal-C_ (60) anion salts are important precursors in the synthesis of C_ (60) .However, it is expected that the C_ (60) 60) Electron transfer reactions with alkali metals are usually carried out in the gas-gas phase or in the solid-gas phase. The main disadvantages of this method are that higher reaction temperatures (200-400 ° C) and longer reaction times (10 ~ 15d). Although the direct reaction of C 60 with alkali metal in tetrahydrofuran (THF) is reported, since the starting materials are not soluble in THF, it is necessary to use strong ultrasonic oscillation for a long time to promote the electron Transfer, so that the number of electron transfer is difficult to control.We found that 1-methylnaphthalene at room temperature as an electron transfer mediator, can effectively promote the transfer of electrons between the alkali-C_ (60), the reaction has mild conditions, fast , The number of electron transfer can be precisely controlled, etc., to facilitate the further study of the physical and chemical properties of alkali-C_ (60) anion salt.