The infrared spectrum of a polycrystalIine film of cyanogen at 80 0 K is reported for the region from 4000 to 500 em-I. In an attempt to account for the splitting observed for the 1'3 fundamental, transition-dipoletransition-dipole interactions have been calculated by computing lattice sums for a variety of crystal shapes and sizes. It is concluded that dipole-dipole coupling can account for only a fraction of the observed splitting.
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