Redetermined structure of oxaline: absolute configuration using Cu Kα radiation.
Acta Crystallogr Sect E Struct Rep Online
; 68(Pt 6): o1626, 2012 Jun 01.
Article
em En
| MEDLINE
| ID: mdl-22719429
ABSTRACT
In the title compound, C(24)H(25)N(5)O(4), the stereogenic C atom bonded to three N atoms and one C atom has an S configuration and its directly bonded neighbour has an R configuration. An intra-molecular N-Hâ¯O hydrogen bond supports the near coplanarity of the two C(3)N(2)-five-membered rings [dihedral angle = 5.64â
(10)°]. In the crystal, mol-ecules are linked by N-Hâ¯N hydrogen bonds, forming a C(8) chain propagating in [001]. The chains are connected by C-Hâ¯O inter-actions, generating a three-dimensional network. The previous study [Nagel et al. (1974 â¶). Chem. Commun. pp. 1021-1022] did not establish the absolute structure and no atomic coordinates were published or deposited.
Texto completo:
1
Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article