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On the vibrational assignments and force constants of tetrasulphurtetraimide, (SNH)411 Sulphur Compounds, Part 75. For Part 74, see ref. 1.

Journal of Molecular Structure
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Abstract Infrared and Rarnan spectra of (S 15NH) 4 and (S 15ND) 4 have been recorded for the first time. The spectra are compared with those of (S 14NH) 4 and (S 14ND) 4 reported earlier. The observed isotopic shifts support the vibrational assignments and force constants published in 1977 by Steudel and Rose, while the alternative assignments published in 1978 by Turowski et al. and by Domingo and Orza are shown to be partly in error.

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