2,3-Dihydro-3-methyl-2-nitrimino-1,3-thiazole

The title compound {alternatively, 3-methyl-2-[oxido(oxo)hydrazono]-2,3-dih ydro-1,3-thiazole}, C4H5N3O2S, was obtained by methylation of N-(2-thiazoly l)nitramine. The molecule lies on a mirror plane and the thiazole ring is p lanar, regular in shape and aromatic. The S atom participates in the aromat ic sextet via an electron pair on the 3p(z) orbital. In the crystal, the mo lecules are arranged in parallel layers, bound to each other by weak C-H . . .O and C-H . . .N hydrogen bonds and by S . . .O dipolar interactions, wi th an interlayer separation of 3.23 Angstrom.