SILENT AND HIGHER-ORDER VIBRATIONS OF C-60 AND ITS COMPOUNDS

We present rich IR spectra of solid samples of C-60 and its derivative s. Most of the IR lines are identified as the activated silent modes o f the C-60 or second-order combination modes. The method of preparatio n of a complex of C-60 and chloro(triphenylphosphine) gold grown from toluene solution is described. Basic physical properties, in particula r IR transmission of the single crystals of the complex, are studied a s a function of temperature. Anomalies in the temperature dependences of the linewidths, their frequencies and intensities are observed and discussed. (C) 1997 Elsevier Science B.V.