Schwingungsspektren der Tetraphosphortetrasulfide
نویسندگان
چکیده
Vibrational Spectra of Tetraphosphorus Tetrasulphides The solid-state i.r. and Raman spectra of the crystalline tetraphosphorus tetrasulphides — 0C-P4S4 and ß-V/jß^ — and the Raman spectrum of the 0C-P4S4 melt have been recorded. The observed frequencies of 0C-P4S4 were tentatively assigned to P4S4 molecules of the cradle type, possessing Ü2d symmetry. An assignment of the /9-P4S4 frequencies to a cage-like P4S4 unit with Cs symmetry is proposed and based on comparison with similar P-S-compounds such as P4S3 and 0C-P4S5. All the tetraphosphorus tetrasulphides decompose during melting into P4S3, P4S7 and /9-P4S6.
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