کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1312769 | 975497 | 2007 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Ru(phen)2(bis-thioether)2+ complexes: Synthesis and photosubstitution reactions Ru(phen)2(bis-thioether)2+ complexes: Synthesis and photosubstitution reactions](/preview/png/1312769.png)
Three new ruthenium(II) complexes which contain two 1,10-phenanthroline units and a third bis-thioether chelate have been prepared and characterized. For two complexes, the X-ray structure shows a perfect fit between the two phen ligands and the bis-thioethers, with almost perfect C2 symmetry for the Ru(phen)2 unit and the S-containing ligand. This geometrical complementarity is also reflected by π–π stacking between the phen nuclei and the S-borne phenyl rings. In relatively harsher preparation conditions a ruthenium complex composed of one phenanthroline and two bis-thioethers is formed as a result of a scrambling reaction. When a bis-thioether chelate incorporated in a macrocycle also including a 6,6′-disubstituted-2,2′-bipyridine unit is used, 1H NMR study shows that an exo S-bonded ruthenium(II) complex is obtained. In presence of chloride anions a photosubstitution reaction of the bis-thioether chelate takes place selectively and efficiently.
New ruthenium(II) complexes containing 1,10-phenanthroline and various bis-thioether ligands have been synthesized and characterized. Visible irradiation of these complexes in presence of chloride anions leads very selectively and efficiently to the photosubstitution of the bis-thioether ligands by the chloride anions.Figure optionsDownload as PowerPoint slide
Journal: Inorganica Chimica Acta - Volume 360, Issue 3, 15 February 2007, Pages 923–930