期刊
ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS
卷 72, 期 -, 页码 1645-+出版社
INT UNION CRYSTALLOGRAPHY
DOI: 10.1107/S2056989016016509
关键词
crystal structure; benzoxazines; phenolic resins; C-H center dot center dot center dot Br and C-H center dot center dot center dot O hydrogen bonds
资金
- Direccion de Investigaciones, Sede Bogota (DIB) de la Universidad Nacional de Colombia [28427]
- COLCIENCIAS
The title benzoxazine molecule, C18H18Br2N2O2, was prepared by a Mannichtype reaction of 4-bromophenol with ethane-1,2-diamine and formaldehyde. The title compound crystallizes in the monoclinic space group C-2/c with a centre of inversion located at the mid-point of the C-C bond of the central CH2CH2 spacer. The oxazinic ring adopts a half-chair conformation. The structure is compared to those of other functionalized benzoxazines synthesized in our laboratory. In the crystal, weak C-H center dot center dot center dot Br and C-H center dot center dot center dot O hydrogen bonds stack the molecules along the b-axis direction.
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