Abstract
The far-infrared spectra of
AsS, As2S3, As4Se3, and As2Se3
are reported for the range 15-400 cm-1. For As4S3
molecules, of symmetry C3v, strong bands at 370 cm-1 and
340 cm-1 arise from symmetric As-S stretching frequencies of
symmetry class A1 and a strong band at 176 cm-1 arises
from a S-4s-S bending mode of degenerate class E. For As2Se3,
bands in the region 90-130 cm-1 are identified as Se-As-Se bending
modes and bands between 200 and 280 cm-1 are due to As-Se stretching
modes.
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26 articles.
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