ISSN:
1600-5724
Source:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Topics:
Chemistry and Pharmacology
,
Geosciences
,
Physics
Notes:
The previously known structures of the modified nucleic acid bases 3-deazauracil (4-hydroxy-2- pyridone) and 6-azauracil (2H,4H-1,2, 4-triazine-3,5-dione) have been shown to be determined by model-based reciprocal-space Patterson methods from low-resolution X-ray powder diffraction data. The data sets used in structural solution consisted of 26 and 23 reflections respectively, with |Fh| values extracted by a simple fitting procedure. The structural parameters found are of limited accuracy and only severely constrained refinements (on F) are possible from these data. However, these determinations indicate the strength of model-based Patterson methods to reveal structural information even from poor data.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1107/S0108767389012353
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