CARBON SUBSULFIDE

The only commercial carbon sulfide is carbon disulfide (qv) [75-15-0] There are several unstable carbon sulfides. Carbon subsulfide [12976-57-2] ... 

C3S2 CARBON SUBSULFIDE -243.5223 3.1498E+03 1.0795E+02 -1.3131E-01 5.9581E... 

Physical Properties. Ketenes range in their properties from colorless gases such as ketene and methylketene [6004 44-0] to deep colored liquids such as diphenylketene [525-06-4] and carbon subsulfide [627-34-9]. Table 1 lists the physical state mp, and bp for certain ketenes, thioketenes, and ketenimines. 

Carbon subsulfide and 2-aminopyridine gave polycondensed products instead of the dithio derivative of 63 (R = H).125... 

Possessing the SCCCS fragment, this binary compound could presumably be a source for the generation of carbon subsulfide, C3S2, under the conditions of flash vacuum thermolysis. 

The formation of the transient thioformyl thioketene 159 and thiacyl thioketene 160 has also been confirmed in flash vacuum pyrolysis (FVP) of l,2-dithiole-3-thiones lb and 158, in the temperature range 800-1000°C, respectively (Scheme 19) <1996TL4805>. A hitherto-unknown transformation of the intermediates 159 and 160, as the most carbon rich carbon sulfides, into linearly shaped carbon subsulfide C3S2 (l,2-propadiene-l,3-dithione) was obtained and identified in an argon matrix at 10 K. 

Carbon subsulfide is a red liquid of low volatility at room temperature. The ground electronic state is as is that of C3O2. Its absorption spectrum has not been extensively investigated above 200 nm and is not known at all below 200 nm. The photoelectric absorption spectrum obtained by Robertson and Merritt (121) in the gas phase and in solution is reproduced in Figs. 15 and 16. No information is available regarding the photochemistry of C3S2. 

Carbon suboxide 0=C=C=C=0 has two infrared active stretching bands at 2258 and 1573 cm and two Raman active stretching bands at 2200 and 830 Carbon subsulfide S=C=C=C=S has two infrared... 

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