Analysis of IR spectra of carbon clusters trapped in noble gas matrices using algorithms based on digital filtering techniques

Abstract

IR spectra of carbon clusters C-n (n greater than or equal to 3) trapped in noble gas matrices (Ar and Kr) at temperatures of 13, 30 and 35 K are analyzed using algorithms based on digital filtering techniques and non-linear least-squares fitting. The spectral features at different temperatures and in different matrices are discussed. The majority of the resolved lines are assigned to C-n cluster species based on data obtained via quantum chemical computations and from tunable laser IR spectrometry of C-n species in the gas phase. A complete analysis of the IR spectra is available upon request.