1. Dinuclear zinc(II) complexes of symmetric Schiff-base ligands with extended quinoline sidearms.
- Author
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\Prema, Dipesh, Wiznycia, Alexander V., Scott, Benjamin M. T., Hilborn, Jessica, Desper, John, and Levy, Christopher J.
- Subjects
ZINC compounds ,METAL complexes ,SCHIFF bases ,LIGANDS (Chemistry) ,AROMATIC compound synthesis - Abstract
The synthesis of two 2-formylquinolines is reported via the Skraup method followed by SeO
2 oxidation. Each aldehyde is condensed with (1R,2R)-diaminocyclohexane and (R)-BINAM, yielding four enantiomerically-pure bis(imine-quinoline) ligands. The neutral ligands are reacted with ZnCl2 to give complexes with bis(bidentate) coordination of ZnCl2 units. X-Ray structural characterization of three complexes shows them to have a single-stranded helical motif, with M helicity, except in one case where a 1 : 1 mixture of M and P helices is seen. The ligands and complexes are further characterized spectroscopically by solution ¹H and13 CNMR, UV-vis and ECD. [ABSTRACT FROM AUTHOR]- Published
- 2007
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