ISSN:
1573-9171
Keywords:
X-ray crystallographic analysis
;
1,1′-divinyl-2,2′-biimidazolyl
;
crystal structure
;
molecular structure
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The crystal and molecular structures of 1,1′-divinyl-2,2′-biimidazolyl (L) were determined by x-ray crystallographic analysis. It was established that the molecule of L has crystallographic symmetry 2 and a cisoid conformation with an angle of rotation of 128° between the imidazole rings. The length of the C2-C2′ bond is increased to 1.485(11) Å compared with the length of the analogous bond in unsubstituted 2,2′-biimidazolyl (1.423 Å). Localization of the N=C multiple bond is observed [1.297(9) Å]. The other N-C bonds of the ring are almost equalized (1.374 Å) and are close to the standard values for bonds of the C sp 2-N type in imidazoles. The angle between the plane of the heterocycle and the plane passing through the atoms of the vinyl group amounts to 7°.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00866589
