![[HTML version]](/e/graphics/htmlborder.gif)
![[PDF version]](/e/graphics/pdfborder.gif)
![[CIF]](/e/graphics/cifborder.gif)
![[3d view]](/e/graphics/3dviewborder.gif)
![[Structure Factors]](/e/graphics/structurefactorsborder.gif)
![[CIF check Report]](/e/graphics/checkcifborder.gif)
![[Issue contents]](/e/graphics/issuecontentsborder.gif)
![[Buy article online]](/logos/buy.gif)
![[Contents scheme]](ob6119contents.gif)
Acta Cryst. (2002). E58, o720-o722 [ doi:10.1107/S1600536802009418 ]
r-1,c-2,t-3,t-4-1-(2-Benzoxazolyl)-2-biphenyl-4-phenyl-3-pyridinylcyclobutane
J.-P. Zhuang, Y. Zheng and W.-Q. Zhang
Abstract: The title compound, C34H26N2O, (I), was synthesized by intermolecular [2+2] photocycloaddition of trans-2-(2-phenylethenyl)benzoxazole and trans-4-(2-biphenylethenyl)pyridine in sulfuric acid solution. Compound (I), with an rctt stereo-structure, is the only crossed photocycloadduct in which the two heteroaryl groups are situated opposite each other, which reveals that the cross-photodimerization process is a head-to-tail reaction rather than a head-to-head one. In (I), the cyclobutane ring shows a puckered conformation and the two dihedral angles between the two triangles defined by diagonal lines of the cyclobutane ring are 19.7 (2) and 19.8 (2)°. The four single bonds of the cyclobutane ring are 1.558 (4), 1.545 (4), 1.572 (4) and 1.566 (4) Å.
Online 8 June 2002
Copyright © International Union of Crystallography
IUCr Webmaster