کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1326996 | 977457 | 2008 | 8 صفحه PDF | دانلود رایگان |
The complex [Ru([9]aneS3)(bpy)Cl]Cl (bpy = 2,2′-bipyridine) was immobilised in plain β-cyclodextrin (β-CD) and permethylated β-CD (TRIMEB) to yield two adducts with a 1:1 host:guest stoichiometry. The adducts were studied by powder X-ray diffraction (XRD), thermogravimetric analysis (TGA), 13C{1H} CP/MAS NMR and vibrational spectroscopy (FT-IR and Raman). Results support the formation of stable supramolecular adducts with a proposed geometry in which the coordinated bypiridine fragment of the guest is partially included in the host cavities, and the bulky [9]aneS3 fragment protrudes out to the interstitial spaces. A packing mode is proposed for [Ru([9]aneS3)(bpy)Cl]Cl · TRIMEB, obtained by Monte Carlo optimisation of the XRD data. TRIMEB molecules are stacked in tilted channels, with the voluminous part of the guest molecules in the inter-channel space. The behaviour of [Ru([9]aneS3])(bpy)Cl]Cl upon CD encapsulation and the chloride ligand hydrolysis process in solution for all compounds were studied in detail by Raman spectroscopy.
[Ru([9]aneS3)(bpy)Cl]Cl was immobilised in β-CD and TRIMEB yielding two crystalline 1:1 adducts studied by powder XRD, TGA, 13C{1H} CP/MAS NMR, FT-IR and Raman. For [Ru([9]aneS3)(bpy)Cl]Cl · TRIMEB a channel packing mode is proposed, obtained by Monte Carlo optimisation of the XRD data.Figure optionsDownload as PowerPoint slide
Journal: Journal of Organometallic Chemistry - Volume 693, Issue 18, 1 September 2008, Pages 3021–3028