Materials Data on H2C2S by Materials Project
C2H2S crystallizes in the trigonal P-3m1 space group. The structure is two-dimensional and consists of one C2H2S sheet oriented in the (0, 0, 1) direction. C is bonded in a single-bond geometry to one H1+ and three equivalent S2- atoms. The C–H bond length is 1.10 Å. All C–S bond lengths are 1.90 Å. H1+ is bonded in a single-bond geometry to one C atom. S2- is bonded to six equivalent C atoms to form edge-sharing SC6 octahedra.
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