کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1323562 | 977295 | 2007 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Synthesis, structure and electrochemistry of cationic diruthenium complexes of the type [(N∩N)2Ru2(CO)2(μ-CO)2(μ-OOCFc)]+ containing a ferrocenecarboxylato bridge and two chelating aromatic diimine ligands Synthesis, structure and electrochemistry of cationic diruthenium complexes of the type [(N∩N)2Ru2(CO)2(μ-CO)2(μ-OOCFc)]+ containing a ferrocenecarboxylato bridge and two chelating aromatic diimine ligands](/preview/png/1323562.png)
The dinuclear bis(ferrocenecarboxylato) complex Ru2(CO)4(μ-OOCFc)2(py)2 (Fc = ferrocenyl, py = pyridine) was found to react with aromatic diimines (2,2′-dipyridyl, 4,4′-dimethyl-2,2′-dipyridyl, 1,10-phenanthroline, 5-nitro-1,10-phenanthroline, and 5-amino-1,10-phenanthroline) in methanol to give the cationic diruthenium complexes [(N∩N)2Ru2(CO)2(μ-CO)2(μ-OOCFc)]+ (1: N∩N = 2,2′-dipyridyl, 2: N∩N = 4,4′-dimethyl-2,2′-dipyridyl, 3: N∩N = 1,10-phenanthroline, 4: N∩N = 5-nitro-1,10-phenanthroline, 5: N∩N = 5-amino-1,10-phenanthroline), which have been isolated as the hexafluorophosphate salts. The molecular structure of 3, solved by single-crystal X-ray analysis of the tetraphenylborate salt [3][BPh4], shows a diruthenium backbone bridged by two carbonyl and by one ferrocenecarboxylato ligand, the two 1,10-phenanthroline ligands being in the axial positions. Cyclic voltammetry in dichloromethane reveals for all compounds two successive oxidations due to ferrocene/ferrocenium redox couple and oxidation of the diruthenium core.
The cationic diruthenium complexes [(N∩N)2Ru2(CO)2(μ-CO)2(μ-OOCFc)]+ containing a ferrocenecarboxylato bridge and diimine chelates have been synthesised from Ru2(CO)4(μ-OOCFc)2(py)2 and the corresponding aromatic diimine N∩N. Cyclovoltammetry of the hexafluorophosphate salts in dichloromethane shows a reversible oxidation of the ferrocenyl substituted followed by the irreversible oxidation of the diruthenium core.Figure optionsDownload as PowerPoint slide
Journal: Journal of Organometallic Chemistry - Volume 692, Issue 4, 15 January 2007, Pages 755–760