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Oxidation of (C5Me5)2Yb(THF)2 with diazabutadiene ButN=CHCH=NBut (DAD) afforded the (C5Me5)2Yb(ButNCHCHNBut) complex (1). The magnetic measurements and X-ray diffraction study confirmed the trivalent state of the ytterbium atom and the radical nature of the DAD ligand in complex 1. The oxidation state of ytterbium in the (C5Me5)2YbDAD—solvent system depends on the coordinating properties of the solvent,...
The reaction of the ytterbium(II) bis(indenyl) complex (C9H7)2Yb(thf)2 (1) with 2,2’-bipyridine afforded the diamagnetic (C9H7)2Yb(bipy) compound (2), whose structure was established by X-ray diffraction analysis. Under similar conditions, the reaction of complex 1 with 1,4-bis(2,6-diisopropylphenyl)-1,4-diazabuta-1,3-diene (DAD) led to oxidation of ytterbium giving rise to the paramagnetic (C9H7)...
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