Synthesis and characterization of iron and ruthenium complexes bearing P–N ligands based on 8-hydroxyquinoline

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• 作者：David Benito-Garagorri ; Wolfgang Lackner-Warton ; Christina M. St ; fest-Hauser ; Kurt Mereiter ; Karl Kirchner
• 关键词：Phosphinito quinoline ligands ; Iron complexes ; Ruthenium complexes/carbonyl complexes ; DFT calculations
• 刊名：Inorganica Chimica Acta
• 出版年：2010
• 出版时间：25 November 2010
• 年：2010
• 卷：363
• 期：14
• 页码：3674-3679
• 全文大小：639 K

文摘

The synthesis of bidentate aminophosphine ligands (PN^quin) based on 8-hydroxyquinoline is described. These ligands react with cis-Fe(CO)₄Br₂ to give selectively octahedral complexes of the type cis,cis-Fe(PN^quin)(CO)₂Br₂. There is only one isomer formed where the two CO and the two bromide ligands adopt a cis configuration. The reaction of [RuCp(CH₃CN)₃]PF₆ with PN^quin ligands affords the halfsandwich complexes [RuCp(PN^quin)(CH₃CN)]PF₆ in high isolated yields. Likewise, treatment of [Ru(η⁶-p-cymene)(μ-Cl)Cl]₂ with PN^quin in the presence of AgCF₃SO₃ affords halfsandwich complexes of the type [Ru(η⁶-p-cymene)(PN^quin)Cl]CF₃SO₃. All ligands and complexes are characterized by NMR and IR spectroscopy. The X-ray structure of representative compounds is reported. In addition, the relative stability of isomeric structures and conformers of Fe(PN^quin-Ph)(CO)₂Br₂ is studied by means of DFT calculations.