CD(ALLOXANTHINE)2(NO3)2(H2O)2

Citation
G. Hanggi et al., CD(ALLOXANTHINE)2(NO3)2(H2O)2, Acta crystallographica. Section C, Crystal structure communications, 50, 1994, pp. 388-391
Citations number
11
Categorie Soggetti
Crystallography
ISSN journal
01082701
Volume
50
Year of publication
1994
Part
3
Pages
388 - 391
Database
ISI
SICI code
0108-2701(1994)50:<388:C>2.0.ZU;2-R
Abstract
The title complex, 3,4-d]pyrimidine-4,6(5H,7H)-dione-N1}cadmium-(II), was prepared as part of a study of the coordinating properties of the xanthine oxidase inhibiting molecule, alloxanthine. [Cd(NO3)2(C5H4-N4O 2)2(H2O)2] contains monomeric centrosymmetric units with the Cd ion oc tahedrally coordinated by two NO3 groups, two H2O molecules and by two alloxanthine ligands. Alloxanthine coordinates monodentately through the pyrazole N atom N(9). The H atoms of the 'neutral alloxanthine mol ecule are bonded to the other atoms N(1), N(3) and N(8). The molecular structure is stabilized by intramolecular bifurcated hydrogen-bonding contacts of the type N-H...O, forming indirect chelates.