1-Amino-6-chloro-2-(1H-pyrrol-2-yl)benzimidazole (RS 1350)

Authors
Pifferi, A Camalli, M Silvestri, R De Martino, G Massa, S Artico, M
Citation
A. Pifferi et al., 1-Amino-6-chloro-2-(1H-pyrrol-2-yl)benzimidazole (RS 1350), ACT CRYST E, 57, 2001, pp. o819-o821
Citations number
23
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE
ISSN journal
16005368 → ACNP
Volume
57
Year of publication
2001
Part
9
Pages
o819 - o821
Database
ISI
SICI code
1600-5368(200109)57:<o819:1(1>2.0.ZU;2-Z
Abstract
The title compound (RS 1350), C11H9ClN4, was recently synthesized by a Smil es rearrangement of 1-[(5-chloro-2-nitrophenyl)sulfonyl]-1H-pyrrole-2-carbo hydrazide or 1-(5chloro-2-nitrophenyl)-1H-pyrrole-2-carbohydrazide in powde red iron-glacial acetic acid medium. From the crystallographic analysis, it is observed that, in the title compound, the benzimidazole moiety is plana r and forms a dihedral angle of 3.8 (2)degrees with the pyrrole ring. The n ear planarity of the two rings indicates an extended conjugation.