Synthesis, structures, and characterization of benzildiimine complexes of rhodium(III) and iridium(I)

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• 作者：Nadera Haque ; Bernd Neumann ; J. Nicolas Roedel ; Ingo-Peter Lorenz
• 关键词：Benzil-bis(trimethylsilyl)diimine ; Benzildiimine ; Crystal structures ; Rhodium ; Iridium ; Triphenylphosphine
• 刊名：Inorganica Chimica Acta
• 出版年：2010
• 出版时间：1 March 2010
• 年：2010
• 卷：363
• 期：4
• 页码：723-728
• 全文大小：380 K

文摘

The reactions of trans-[(PPh₃)₂M(CO)Cl] (M = Rh and Ir) with benzildiimine (H₂BDI = 2) derived from benzil-bis(trimethylsilyl)diimine (Si₂BDI) (1) in a 1:2 and 1:1 molar ratio afforded the cationic bis-benzildiiminato complexes [Rh(PPh₃)₂(HBDI)₂]Cl (3) and the mono-benzildiimine complex [Ir(PPh₃)₂(CO)(H₂BDI)]Cl (4), respectively. Both complexes are fully characterized using IR, FAB-MS, NMR spectroscopy and elemental analysis. The single crystal X-ray structure analysis reveals a distorted octahedral coordination geometry for the Rh(III) in 3 and a highly distorted square pyramidal geometry for Ir(I) in 4. In addition, the solid-state structure of Si₂BDI is reported here for the first time showing the substituents highly twisted because of steric reasons.