Author/Authors :
Davydov، نويسنده , , V.A and Kashevarova، نويسنده , , L.S and Rakhmanina، نويسنده , , A.V and Senyavin، نويسنده , , V.M and Pronina، نويسنده , , O.P and Oleynikov، نويسنده , , N.N and Agafonov، نويسنده , , V and Céolin، نويسنده , , R and Allouchi، نويسنده , , H and Szwarc، نويسنده , , H، نويسنده ,
Abstract :
The kinetics of pressure-induced dimerization of fullerite C60 at 1.5 GPa in the 373–473 K temperature interval was studied by X-ray diffraction, infrared and Raman spectroscopy. Kinetic curves of the dimerization reaction in the fcc and sc phases of C60 were obtained by monitoring the dimeric (C60)2 IR line at 796 cm−1. The value of the dimerization activation energy was determined to be Ea(dim)=134±6 kJ mol−1, assuming the second order irreversible reaction. The peculiarities of the dimerization processes in the fcc and sc phases of C60 fullerite are also discussed.
