NMR studies of alkali fullerides: Rb_1C_60 and Cs_1C_60

摘要

We report on ~13C and ~87Rb NMR measurements on Rb_1C_60 rocksalt, polymerized and quenched phases, as well as on polymerized Cs_1C_60 at room temperature. We present static and high-resolution MAS NMR signatures of these phases in various conditions, and we discuss the different line positions. The study ofthe temperature dependence of ~87Rb NMR on Rb_1C_60 has evidenced the high stability in air of all the Rb_1C_60 phases.