title: Anilinopyridinate-supported Ru2x+(x = 5 or 6) paddlewheel complexes with labile axial ligands.
abstract: Five new metal-metal bonded Ru2compounds are presented and discussed: Ru2(ap)4ONO2(2), [Ru2(ap)4NCMe][BF4] (3), Ru2(ap)4FBF3(4), Ru2(ap)4OTf (5), and [Ru2(ap)4OTf][Ag(OTf)2] (6) (ap = 2-anilinopyridinate). All compounds have a (4,0) arrangement of the ap ligands about the Ru-Ru bond and contain one sterically blocked axial site and one site containing a labile ligand. These compounds display some of the shortest Ru-Ru distances known for this class of compounds. We demonstrate a reversible interconversion between compounds 3 and 4 as the MeCN and BF4-ligands are readily displaced. Despite the presence of labile axial ligands, compounds 2-5 remain high spin with an S = 3/2 ground state as determined by EPR spectroscopy.
authors.affiliation: Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, WI 53706, USA. berry@chem.wisc.edu.
authors.forename: Amanda R
authors.initials: AR
authors.lastname: Corcos
authors.forename: John F
authors.initials: JF
authors.lastname: Berry