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X-ray Crystallography at 170 K of Racemic 2,2'-Dimethoxy-9,9'-biacridine and 1H NMR Study of 2,2'-Diacetoxy-9,9'-biacridine

Author(s): Gérard Boyer | Tuan Lormier | Jean-Pierre Galy | Antonio L. Llamas-Saiz | Concepción Foces- Foces | Marta Fierros | José Elguero | Albert Virgili

Journal: Molecules
ISSN 1420-3049

Volume: 4;
Issue: 4;
Start page: 104;
Date: 1999;
Original page

Keywords: Biacridines | X-Ray analysis | Lantanide shift reagents | Pirkle's alcohol

Three derivatives of 9,9'-biacridine, 2,2'-dihydroxy, 2,2'-dimethoxy and 2,2'-diacetoxy have been prepared. The crystal structure of racemic 2,2'-dimethoxy-9,9'-biacridine CHCl3 1:1 complex has been determined and shows an almost perpendicular conformation of both acridine rings. 1H NMR experiments using the diacetoxy derivative and both Eu(tfc)3 and R-Pirkle's alcohol show the splitting of some signals characteristic of a racemic compound.
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