Synthesis and Structural Features of Co(II) and Co(III) Complexes Supported by Aminotrisphenolate Ligand Scaffolds

Abstract

<p> Co(II) complexes of aminotrisphenolate<br /> ((ArO)3N3&minus;) ligands can be prepared straightforwardly in high<br /> yield. X-ray analysis reveals these complexes to comprise of two<br /> different hemispheres, one containing an anionic Co((ArO)3N)&minus;<br /> and the other a cationic (ArO)3NH+ unit, which are associated<br /> through hydrogen bonding. These Co(II) complexes can be<br /> easily converted into their Co(III) analogues in air in the<br /> presence of suitable bases such as dimethylaminopyridine and<br /> 2,2&prime;-bipyridine, and the structural features and magnetic properties<br /> of these latter compounds are also reported.</p>