کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1307544 | 975144 | 2011 | 4 صفحه PDF | دانلود رایگان |
Reactions of the electron-deficient triosmium cluster [Os3(CO)9(μ3-η2-C9H6N)(μ-H)] (1) with various alkynes are described. Cluster 1 readily reacts with the activated alkyne dimethyl acetylenedicarboxylate (dmad) upon mild heating (65–70 °C) to give the adduct [Os3(CO)9(μ-C9H6N)(μ3-MeO2CCCHCO2Me)] (2). In contrast, a similar reaction of 1 with diphenylacetylene affords previously reported compounds [Os3(CO)10(μ-η2-C9H6N)(μ-H)] (3), [Os3(CO)9(μ-C4Ph4)] (4) and [Os3(CO)8{μ3-C(C6H4)C3Ph3}(μ-H)] (5) while with 2-butyne gives only the known compound [Os3(CO)7(μ-C4Me4)(μ3-C2Me2)] (6). The new cluster 2 has been characterized by a combination of spectroscopic data and single crystal X-ray diffraction analysis.
Reactivity of the electron-deficient triosmium quinoline cluster with various alkynes has been studied.Figure optionsDownload as PowerPoint slideHighlights
► Reactivity of the unsaturated [Os3(CO)9(μ3-η2-C9H6N)(μ-H)] towards various alkynes.
► Synthesis and X-ray structure of a triosmium alkenyl cluster.
► Insertion of dimethyl acetylenedicarboxylate into metal hydride bond.
Journal: Inorganica Chimica Acta - Volume 378, Issue 1, 30 November 2011, Pages 307–310