Acta Cryst. (2008). E64, o1376  [ doi:10.1107/S1600536808017364 ]

Diethyl {(4-methoxyphenyl)[5-(4-nitrophenyl)-1,3,4-thiadiazol-2-ylamino]methyl}phosphonate

L.-H. Yin, R. Wan, F. Han, B. Wang and J.-T. Wang

Abstract: The title compound, C₂₀H₂₃N₄O₆PS, was synthesized by the reaction of N-(4-methoxybenzylidene)-5-(4-nitrophenyl)-1,3,4-thiadiazol-2-amine and diethyl phosphite. The thiadiazole and nitro-substituted phenyl rings in the molecule are approximately coplanar, the dihedral angle being 5.3 (2)°. The dihedral angle formed by the mean plane through all non-H atoms of both the thiadiazole and the nitro-substituted phenyl ring with the plane of the methoxy-substituted phenyl ring is 48.9 (2)°. In the crystal structure, molecules form centrosymmetric dimers as a result of N-HO bonds involving amine H and phosphine oxide O atoms.

Online 5 July 2008

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