NMR study of molecular dynamics in C602([(C6H5)3P] AuCl) crystal

A high resolution 3C NMR study of the 1:2 fullerene C60, complex with [(C6H5)3P]AuCl (CTPG) has been performed in the 180–350 K temperature range. Evidence for the CTPG polymerization, accompanied by C60 protonation, is given. The C60 rotation in the complex has been shown to be hindered, thermally activated, with the activation energy †E = 5.7 kcal/mol. The rotational correlation time, determined through the spin-lattice relaxation time measurements, varies from 10−6 to 10−9 s in the studied temperature range. No indication of an order-disorder transition in the C60, sublattice has been found, contrary to previous optical studies.