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Hydro­gen-bonded chains in 5-methyl-2-tri­fluoro­methyl-1,2,4-triazolo­[1,5-a]­pyrimidin-7(4H)-one and hydrogen-bonded chains of rings in 5-amino-3-tri­fluoro­methyl-1H-1,2,4-triazole–5-methyl-2-tri­fluoro­methyl-1,2,4-triazolo­[1,5-a]­pyrimidin-7(4H)-one (1/1), the co-crystal of a reaction product and one of its precursors

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In the title compounds, C7H5F3N4O, (I), and C3H3F3N4·C7H5F3N4O, (II), all of the molecular components exhibit some polarization of their molecular–electronic structures. The mol­ecules in (I) are linked into simple C(6) chains, while in (II), the components are linked by a combination of two-centre N—H…N and N—H…O, and three-centre N—H…(O,N) hydrogen bonds into chains containing R (5), R (6) and R (8) rings.

Document Type: Research Article


Publication date: 2004-10-01

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