OXIDATION OF 5,6-DIAMINO-1,3-DIMETHYL-URACIL BY METAL-IONS - STRUCTURE OF 1,3,6,8-TETRAMETHYL-2,4,7,9(1H,3H,6H,8H)- PYRIMIDO[4,5-G]PTERIDINETETRONE

Authors
ROMEROSA A COLACIO E SUAREZVARELA J AVILAROSON JC HIDALGO MA ROMEROGARZON J
Citation
A. Romerosa et al., OXIDATION OF 5,6-DIAMINO-1,3-DIMETHYL-URACIL BY METAL-IONS - STRUCTURE OF 1,3,6,8-TETRAMETHYL-2,4,7,9(1H,3H,6H,8H)- PYRIMIDO[4,5-G]PTERIDINETETRONE, Acta crystallographica. Section C, Crystal structure communications, 51, 1995, pp. 1005-1007
Citations number
9
Categorie Soggetti
Crystallography
Journal title
Acta crystallographica. Section C, Crystal structure communications → ACNP
ISSN journal
01082701
Volume
51
Year of publication
1995
Part
5
Pages
1005 - 1007
Database
ISI
SICI code
0108-2701(1995)51:<1005:OO5BM->2.0.ZU;2-F
Abstract
The structure of the title compound, C12H12N6O4, consists of independe nt tricyclic molecules with a central pyrazine ring and terminal pyrim idine rings. The molecular centroid coincides with a crystallographic inversion centre, leading to a trans disposition of the terminal pyrim idine rings. The angle between the central pyrazine ring and the pyrim idine rings is 4.2(3)degrees, indicating that the molecule is almost p lanar.