Tetradentate and hexadentate ligands, with N4 and S2N4 donor sets respectively, were complexed with Cu(II) and Ni(II) to form chiral and achiral chelates.  The tetradentate ligands were prepared using vinylpyridine and chiral piperazine derivatives to form both enantiomers of the chiral complexes, as well as similar non-chiral mono and dinuclear complexes using achiral derivatives of piperazine and homopiperazine.  The hexadentate ligands were synthesized from 2-hydrazinopyridine and alkyl and aryl bridged dithio-diketo precursors, which were prepared using either a N,N,N-triethyl-N-(propan-2-onyl)ammonium or N,N,N-triethyl-N-(phenylethan-2-onyl)ammonium chloride salt and a range of dithiols.  Crystal structures and absorption data will be presented as well as ECD plots for the chiral complexes and magnetic data for the dinuclear complex.  Complexes were also characterized using electrochemistry and ESR.

Chiral and achiral Cu(II) and Ni(II) complexes with novel multidentate ligands

244th National Meeting (2012)

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