Open AccessThree isomeric ( E )‐nitrobenzaldehyde nitrophenylhydrazones: chains of rings in isomorphous ( E )‐2‐nitrobenzaldehyde 3‐nitrophenylhydrazone and ( E )‐3‐nitrobenzaldehyde 2‐nitrophenylhydrazone, and centrosymmetric dimers in ( E )‐4‐nitrobenzaldehyde 2‐nitrophenylhydrazone
Author(s) -
Ferguson George,
Low John N.,
Skakle Janet M. S.,
Glidewell Christopher,
Wardell James L.
Publication year - 2005
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
eISSN - 1600-5759
pISSN - 0108-2701
DOI - 10.1107/s0108270105028799
Subject(s) - isostructural , molecule , hydrogen bond , crystallography , chemistry , stereochemistry , ring (chemistry) , crystal structure , organic chemistry
The isomeric compounds ( E )‐2‐nitrobenzaldehyde 3‐nitrophenylhydrazone and ( E )‐3‐nitrobenzaldehyde 2‐nitrophenylhydrazone, both C 13 H 10 N 4 O 4 , are isomorphous and effectively isostructural, and in both, the molecules are disordered across centres of inversion in the space group P 2 1 / 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—H⋯O hydrogen bonds into centrosymmetric dimers.