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Lanthanide(II) Complexes of the Dihydrotriazinido Ligand [N{C(Ph)=N}2C(tBu)Ph]−
Authors:Peter B Hitchcock  Alexei V Khvostov  Michael F Lappert  Andrey V Protchenko
Abstract:The potassium dihydrotriazinide K(LPh,tBu) ( 1 ) was obtained by a metal exchange route from Li(LPh,tBu)(THF)3] and KOtBu (LPh,tBu = N{C(Ph)=N}2C(tBu)Ph]). Reaction of 1 with 1 or 0.5 equivalents of SmI2(thf)2 yielded the monosubstituted SmII complex Sm(LPh,tBu)I(THF)4] ( 2 ) or the disubstituted Sm(LPh,tBu)2(THF)2] ( 3 ), respectively. Attempted synthesis of a heteroleptic SmII amido‐alkyl complex by the reaction of 2 with KCH2Ph produced compound 3 due to ligand redistribution. The YbII bis(dihydrotriazinide) Yb(LPh,tBu)2(THF)2] ( 4 ) was isolated from the 1:1 reaction of YbI2(THF)2 and 1 . Molecular structures of the crystalline compounds 2 , 3· 2C6H6 and 4· PhMe were determined by X‐ray crystallography.
Keywords:Samarium  Ytterbium  Amido ligands  Crystal structures
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