rac-3,9-Bis(3-chloro­phen­yl)-2,4,8,10-tetra­oxaspiro­[5.5]undeca­ne

نویسندگان

  • Zhengyi Li
  • Beibei Zhou
  • Liang Chen
  • Ling Ge
  • Xiaoqiang Sun
چکیده

In the title compound, C(19)H(18)Cl(2)O(4), the two non-planar six-membered heterocycles passing through the spiro-C atom both adopt chair conformations, and the dihedral angle between the two benzene rings is 7.2 (1)°. In the crystal, the enanti-omers with R and S configurations are generated by the symmetry elements of the centrosymmetric space group, forming a racemic crystal. Inter-molecular C-H⋯π and weak C-H⋯O inter-actions link the mol-ecules in the crystal structure.

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منابع مشابه

3,9-Bis(2-chloro­phen­yl)-2,4,8,10-tetra­oxaspiro­[5.5]undeca­ne

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The title compound, C19H16F4O4, was prepared by the condensation reaction of 2,6-di-fluoro-benzaldehyde and penta-erythritol. The whole mol-ecule is generated by twofold rotational symmetry. The two six-membered O-heterocycles adopt chair conformations through a shared spiro-carbon atom that is located on the crystallographic twofold rotation axis. In this conformation, the two aromatic rings a...

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عنوان ژورنال:

دوره 67  شماره 

صفحات  -

تاریخ انتشار 2011