Four-coordinate 14 valence electron d6-complexesare typically known to adopt electronic high spin (HS), intermediate spin (IS)or low spin (LS) configuration in their tetrahedral, square-planar andbutterfly shaped geometries, respectively. However, a square-planar LS complex isnot known. In this contribution we present a square-planar ruthenium(II) amidoPNP pincer complex with an unique LS electronic state. Furthermore, thespin-state can be controlled between LS and IS by versatile modification of thepincer backbone. These electronic effects and the reactivities of the IS and LScomplexes will be discussed.

Four-coordinate Ru(II) amdio PNP-pincer complexes

240th National Meeting (2010)

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