Crystal structure of the 1: 1 complex of 5-fluorouracil and 9-ethylhypoxanthine.
9-Ethylhypoxanthine and 5-fluorouracil form a 1 : 1 crystalline complex. The structure of this complex has been solved by x-ray diffraction analysis. The molecules crystallize in a monoclinic lattice and form a sheet structure in which pairs of fluorouracil molecules are held together by two hydrogen bonds. The 9-ethylhypoxanthine residues fill up the rest of the molecular sheet by forming single hydrogen bonds with each uracil pair.
D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003461:Crystallography; D005472:Fluorouracil; D007042:Hypoxanthines
D007042:Hypoxanthines; D005472:Fluorouracil