Acta Crystallographica Section C

Crystal Structure Communications

Volume 62, Part 1 (January 2006)

organic compounds

sk1892 scheme

Acta Cryst. (2006). C62, o42-o44 [ doi:10.1107/S0108270105040126 ]

2-Amino-5-trifluoromethyl-1,3,4-thiadiazole and a redetermination of 2-amino-1,3,4-thiadiazole, both at 120 K: chains of edge-fused R₂²(8) and R₄⁴(10) rings, and sheets of R₂²(8) and R₆⁶(20) rings

N. Boechat, S. B. Ferreira, C. Glidewell, J. N. Low, J. M. S. Skakle and S. M. S. V. Wardell

Abstract: Molecules of 2-amino-5-trifluoromethyl-1,3,4-thiadiazole, C₃H₂F₃N₃S, are linked by two independent N-HN hydrogen bonds into sheets of alternating R₂²(8) and R₆⁶(20) rings, while the molecules of the unsubstituted 2-amino-1,3,4-thiadiazole, C₂H₃N₃S, are linked, again by two independent N-HN hydrogen bonds, but into chains of edge-fused R₂²(8) and R₄⁴(10) rings.

Formula: C₂H₃N₃S and C₃H₂F₃N₃S


	Structure factor file (CIF format) (46.5 kbytes) [ doi:10.1107/S0108270105040126/sk1892Isup2.hkl ] Contains datablock I

	Structure factor file (CIF format) (68.4 kbytes) [ doi:10.1107/S0108270105040126/sk1892IIsup3.hkl ] Contains datablock II

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