ISSN:
1572-8854
Keywords:
Urea-glutaric acid complex
;
structural building block
;
molecular recognition
;
solid state organization
;
crystal engineering
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geosciences
,
Physics
Notes:
Abstract The crystal structure of a 2∶1 urea-glutaric acid cocrystal has been determined. The crystal is monoclinic:C2lc,a=11.954(5),b=10.932(1),c=9.078(3) Å, β=97.86(3)°, withZ=4. The formula unit is a hydrogen-bonded heterotrimeric aggregate consisting of one acid subunit locked between two identical urea subunits. The symmetric arrangement from both sides of the acid allows for retaining the twofold axis primary inherent for the glutaric acid. An additional symmetry element (inversion center) is introduced during the aggregate self-association into one-dimensional chains, which are further organized through glide operations into a well-defined three-dimensional, hydrogen-bonded crystal network.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01671077
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