کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1306152 | 975069 | 2011 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Bioorganometallics: First examples of cyclometalated iridium(III) complexes containing di- and tripeptide ester ligands Bioorganometallics: First examples of cyclometalated iridium(III) complexes containing di- and tripeptide ester ligands](/preview/png/1306152.png)
The synthesis of bis-cyclometalated [Ir(ptpy)2(gly-gly-OEt)] (2, ptpy = 2-(p-tolyl)pyridinato; gly-gly-OEt = glycylglycine ethyl ester) and [Ir(ptpy)2(gly-gly-gly-OEt)] (3, gly-gly-gly-OEt = glycylglycylglycine ethyl ester) from the reaction of [{Ir(μ-Cl)(ptpy)2}2] (1) with the corresponding peptide ester hydrochlorides in the presence of NaOMe is described. The molecular structure of 2 was confirmed by a single-crystal X-ray diffraction study. The compound crystallized from dichloromethane/iso-hexane in the space group P21/a. In the crystal packing the molecules of 2 exhibit N–H⋯O hydrogen bonds to the neighbor molecules to form dimeric units. The absorption and emission spectra of 2 and 3 were recorded and exhibit these compounds as strong green-emitting complexes.
The synthesis of the bis-cyclometalated peptide ester complexes [Ir(ptpy)2(gly-gly-OEt)] (2, ptpy = 2-(p-tolyl)pyridinato, gly-gly-OEt = glycylglycine ethyl ester) and [Ir(ptpy)2(gly-gly-gly-OEt)] (3, gly-gly-gly-OEt = glycylglycylglycine ethyl ester) from the reaction of [{Ir(μ-Cl)(ptpy)2}2] 1 with the peptide ester hydrochlorides is described. The molecular structure of 2 was confirmed by a single-crystal X-ray diffraction study.Figure optionsDownload as PowerPoint slideHighlights
► First Synthesis of N,N chelated peptide ester complexes of Ir(III) with cyclometalated tolylpyridinato ligands.
► X-ray diffraction study of 2 shows formation of hydrogen bonded dimers in the crystal.
► Complexes show green phosphorescence.
Journal: Inorganica Chimica Acta - Volume 379, Issue 1, 15 December 2011, Pages 40–43