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A Study of Acid-Base Equilibria in Acetonitrile Systems of 2-Halo(Cl,Br,I)-4-nitropicoline(3,5,6) N-oxides
Molecules 1999, 4(4), 104-121; doi:10.3390/40400104
Article

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

1
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1, 1, 2, 2,* , 3, 3
 and
4,*
Received: 16 March 1998 / Accepted: 5 May 1998 / Published: 16 April 1999
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Abstract

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.
Keywords: Biacridines; X-Ray analysis; Lantanide shift reagents; Pirkle's alcohol Biacridines; X-Ray analysis; Lantanide shift reagents; Pirkle's alcohol
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Boyer, G.; Lormier, T.; Galy, J.-P.; Llamas-Saiz, A.L.; Foces- Foces, C.; Fierros, M.; Elguero, J.; Virgili, A. 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. Molecules 1999, 4, 104-121.

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