Syntheses and structures of calcium and ytterbium bis(diphosphanylamido) complexes

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• 作者：Tarun K. P ; a ; Michael T. Gamer ; Peter W. Roesky
• 关键词：Calcium ; Chelates ; Coordination chemistry ; Ytterbium ; N ; P ligands
• 刊名：Inorganica Chimica Acta
• 出版年：2006
• 出版时间：1 December 2006
• 年：2006
• 卷：359
• 期：15
• 页码：4765-4768
• 全文大小：182 K

文摘

Bis(diphosphanylamido) complexes of calcium and ytterbium, [{(Ph₂P)₂N}₂M(THF)₃] (M = Ca (1), Yb (2)), have been prepared by reaction of [K(THF)_nN(PPh₂)₂] (n = 1.25, 1.5) and MI₂. The single crystal X-ray structures of compounds 1 and 2 always show a η²-coordination of the ligand via the nitrogen and one phosphorus atom. In solution a dynamic behavior of the ligand is observed, which is caused by the rapid exchange of the two different phosphorus atoms.