ISSN:
1063-7745
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geosciences
,
Physics
Notes:
Abstract The crystal structure of 2-oxo-2,3-dihydroimidazo[1,2-a]pyridine hydrochloride, C7H7ClN2O, is determined by X-ray diffraction. The structure is solved by the direct method and refined by the least-squares procedure to R = 0.0408. The alternation of bond lengths in the molecule is inconsiderable, but does not disappear completely, since no aromatization occurs upon formation of the bicycle from the molecule. This structural change is apparently due to the increased conjugation of the NH group with the pyridine residue of the bicycle. One of the specific structural features of the salt is the formation of the N+-HïCl− hydrogen bond (N-H, 0.792 Å; H⋯Cl, 2.260 Å; and N-H⋯Cl, 171.2°).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1134/1.171144
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