Boechat Nubia, Ferreira Sabrina B, Glidewell Christopher, Low John N, Skakle Janet M S, Wardell Solange M S V
Complexo Tecnológico de Medicamentos Farmanguinhos, Avenida Comandante Guaranys 47, Jacarepaguá, Rio de Janeiro, RJ, Brazil.
Acta Crystallogr C. 2006 Jan;62(Pt 1):o42-4. doi: 10.1107/S0108270105040126. Epub 2005 Dec 24.
Molecules of 2-amino-5-trifluoromethyl-1,3,4-thiadiazole, C3H2F3N3S, are linked by two independent N-H...N hydrogen bonds into sheets of alternating R(2)(2)(8) and R(6)(6)(20) rings, while the molecules of the unsubstituted 2-amino-1,3,4-thiadiazole, C2H3N3S, are linked, again by two independent N-H...N hydrogen bonds, but into chains of edge-fused R(2)(2)(8) and R(4)(4)(10) rings.
2-氨基-5-三氟甲基-1,3,4-噻二唑(C₃H₂F₃N₃S)分子通过两个独立的N-H...N氢键连接成由交替的R(2)(2)(8)和R(6)(6)(20)环组成的片层,而未取代的2-氨基-1,3,4-噻二唑(C₂H₃N₃S)分子同样通过两个独立的N-H...N氢键连接,但形成由边缘稠合的R(2)(2)(8)和R(4)(4)(10)环组成的链。