The infrared and Raman spectra of nitrogen tetrasulfide (N4S4) are presented along with the infrared spectrum of nitrogen hydrogen sulfide (N4S4H4). These data have been considered in terms of the several proposed structures for nitrogen tetrasulfide and have been found to be consistent with a cage structure of D2d symmetry. With the aid of a normal coordinate analysis of the nondegenerate symmetry species, a complete assignment of frequencies to their normal modes of vibration has been made for nitrogen tetrasulphide. A tentative assignment of frequencies is also given for nitrogen hydrogen sulfide.
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Lippincott et al. (1953) studied this question.
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