Title of article :
Crystal structure of 1,2-bis(6-bromo-3,4-dihydro-2H-benz[e][1,3]oxazin-3-yl)ethane: a bromine-containing bis-benzoxazine
Author/Authors :
Rivera, Augusto Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias, Departamento de Química, Colombia , ' Rojas, Jicli José Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias, Departamento de Química, Colombia , Ríos-Motta, Jaime Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias, Departamento de Química, Colombia , Bolte, Michael Institut für Anorganische Chemie - J. W. Goethe-Universität Frankfurt, Germany
Abstract :
The title benzoxazine molecule, C18H18Br2N2O2, was prepared by a Mannich-type reaction of 4-bromophenol with ethane-1,2-diamine and formaldehyde. The title compound crystallizes in the monoclinic space group C2/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⋯Br and C—H⋯O hydrogen bonds stack the molecules along the b-axis direction.
Keywords :
crystal structure , C—H⋯Br and C—H⋯O hydrogen bonds , phenolic resins , benzoxazines
Journal title :
Acta Crystallographica Section E: Crystallographic Communications
