New compounds of tetradentate Schiff bases with vanadium(IV) and vanadium(V) †

1 January 1999

journal article
research article
Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.

No. 24,p. 4437-4446
https://doi.org/10.1039/a908337e

Abstract

A new range of potentially tetradentate proligands, H₂L, derived from aromatic aldehydes and ketones and aliphatic diamines has been prepared. Their vanadyl(IV) and vanadyl(V) complexes [VO(L)] and [VO(L)]⁺, and also some adducts [VO(L)→VO(L)]⁺, have been synthesized. The structures of four selected complexes have been determined and it is shown that these must be a result of both steric and electronic factors that make prediction of conformation and stacking difficult. The adducts [VO(L)→VO(L)]⁺ have structures that persist in solution in dichloromethane, where they can undergo redox chemistry, but they apparently dissociate into their component complexes in the donor solvent acetonitrile.

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