Ferguson George, Glidewell Christopher, Low John N, Skakle Janet M S, Wardell James L
School of Chemistry, University of St Andrews, Fife KY16 9ST, Scotland.
Acta Crystallogr C. 2005 Oct;61(Pt 10):o613-6. doi: 10.1107/S0108270105028799. Epub 2005 Sep 30.
The isomeric compounds (E)-2-nitrobenzaldehyde 3-nitrophenylhydrazone and (E)-3-nitrobenzaldehyde 2-nitrophenylhydrazone, both C13H10N4O4, are isomorphous and effectively isostructural, and in both, the molecules are disordered across centres of inversion in the space group P21/c. The molecules are linked into complex chains of rings by N-H...O and C-H...O hydrogen bonds. In the isomeric compound (E)-4-nitrobenzaldehyde 2-nitrophenylhydrazone, the fully ordered molecules are linked by N-HO hydrogen bonds into centrosymmetric dimers.
同分异构体(E)-2-硝基苯甲醛3-硝基苯腙和(E)-3-硝基苯甲醛2-硝基苯腙,二者化学式均为C13H10N4O4,是同晶型且有效等结构的,并且在这两种化合物中,分子在空间群P21/c中关于反演中心无序排列。分子通过N-H...O和C-H...O氢键连接成复杂的环链。在同分异构体(E)-4-硝基苯甲醛2-硝基苯腙中,完全有序的分子通过N-HO氢键连接成中心对称二聚体。