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Stereoselectivity in reactions of metal complexes IX Stereoselective formation of cobalt(III) complexes with new linear pentadentate ligands

✍ Scribed by Klaus Bernauer; Philippe Pousaz

Publisher
John Wiley and Sons
Year
1984
Tongue
German
Weight
397 KB
Volume
67
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

The synthesis of cobalt(III) complexes with the new linear pentadentate ligands meso‐ and racemic 2,6‐bis(3__S__)‐3‐carboxy‐4‐methyl‐2‐azapentylpyridine (2) are described. Only one of the different possible isomers is obtained from each ligand. The structure of the complexes has been assigned on the basis of their ^1^H‐NMR and CD spectra. The structure of the aqua‐cobalt(III)‐1a and the aqua‐cobalt(III)‐1b has been confirmed by X‐ray analysis. Partial resolution of optical antipodes of the aquacobalt(III)‐1b was achieved by column chromatography and a tentative assignment of their absolute configuration is made.

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