Citation: XU Jing-Yao, ZHANG Lei, HU Jin-Song, SHAO Xue-Man, PAN Cheng-Ling. Two Divalent Ytterbium Complexes with Diamido Ligands [K2(L)(THF)2](L=[Ph2Si(NAr)2]2-, Ar=2,6-iPr2C6H3)[J]. Chinese Journal of Inorganic Chemistry, ;2015, 31(7): 1433-1438. doi: 10.11862/CJIC.2015.203
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The reaction of diamido ligand [K2(L)(THF)2] (1) (L=[Ph2Si(NAr)2]2-, Ar=2,6-iPr2C6H3) with YbI2(THF)2 afforded two complexes [Yb(L)(THF)3] (2) and {Yb(L)2[K(THF)2]2} (3), which were characterized by X-ray structure analysis, NMR and elemental analysis. The coordination geometry of complex 2 is five-coordinated, and Yb metal center is coordinated by one amido ligand and three THF molecules. Complex 3 adopts a four-coordinated, nearly planar geometry around the Yb(Ⅱ) center. Two potassium ion is sandwiched between two phenyl rings via cation-arene π-interactions, which helps to stabilize the metal center.
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