Study of half sandwich platinum group metal complexes containing tetradentate N-donor ligand bearing two di-pyridylamine units linked by an aromatic spacer

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• 作者：Gajendra Gupta^a ; Sairem Gloria^a ; Bruno Therrien^b ; Babulal Das^c ; Kollipara Mohan Rao^a ; ^{mohanrao59@gmail.com}
• 关键词：Arene ruthenium compounds ; Cp^*rhodium complexes ; 1 ; 2-Bis(di-2-pyridylaminomethyl)benzene ligand
• 刊名：Journal of Organometallic Chemistry
• 出版年：2011
• 出版时间：1 February 2011
• 年：2011
• 卷：696
• 期：3
• 页码：702-708
• 全文大小：756 K

文摘

A general approach for the preparation of dinuclear η⁵- and η⁶-cyclic hydrocarbon platinum group metal complexes, viz. [(η⁶-arene)₂Ru₂(NN∩NN)Cl₂]²⁺ (arene = C₆H₆, 1; p-ⁱPrC₆H₄Me, 2; C₆Me₆, 3), [(η⁵-C₅Me₅)₂M₂(NN∩NN)Cl₂]²⁺ (M = Rh, 4; Ir, 5), [(η⁵-C₅H₅)₂M₂(NN∩NN)(PPh₃)₂]²⁺ (M = Ru, 6; Os, 7), [(η⁵-C₅Me₅)₂Ru₂(NN∩NN)(PPh₃)₂]²⁺ (8) and [(η⁵-C₉H₇)₂Ru₂(NN∩NN)(PPh₃)₂]²⁺ (9), bearing the bis-bidentate ligand 1,2-bis(di-2-pyridylaminomethyl)benzene (NN∩NN), which contains two chelating di-pyridylamine units connected by an aromatic spacer, is reported. The cationic dinuclear complexes have been isolated as their hexafluorophosphate or hexafluoroantimonate salts and characterized by use of a combination of NMR, IR and UV–vis spectroscopic methods and by mass spectrometry. The solid state structure of three derivatives, [2][SbF₆]₂, [3][PF₆]₂ and [4][PF₆]₂, has been determined by X-ray structure analysis.