کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1309574 | 975213 | 2009 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Design, synthesis and coordination chemistry of sidearm substituted bisoxazoline ligands Design, synthesis and coordination chemistry of sidearm substituted bisoxazoline ligands](/preview/png/1309574.png)
We describe herein the design, synthesis and coordination chemistry of a novel ligand motif that combines a bisoxazoline with a third flexible chelating substituent (“tail”). Four such ligands (6-9) were synthesized from phenylglycine in 4–5 steps each in ca. 20% overall yield. Coordination of 6 and 7 to [Re(CO)4Cl]2 yielded crystals suitable for X-ray analysis. Likewise, crystals were obtained from coordination of 6 to FeCl2. The solid state structures of the resulting complexes (10–12) reveal κ2 binding of the bisoxazoline motif; however, the structures of complexes 10 and 12 show that the “tail” is poised above the metal center, demonstrating the potential for alternate binding modes in solution. The complexes exhibit a relatively planar 6-membered chelate structure, in contrast to the boat conformation typical of trispyrazolylborate complexes.
We describe the design, synthesis and coordination chemistry of a novel chiral ligand motif that combines a bisoxazoline with a third flexible chelating substituent (“tail”). The molecular structures of two rhenium complexes and an iron complex are reported, along with a discussion of the binding modes.Figure optionsDownload as PowerPoint slide
Journal: Inorganica Chimica Acta - Volume 362, Issue 12, 15 September 2009, Pages 4546–4552