Synthesis, Structural Characterization, and Host–Guest Studies of Aminoquinonato-Bridged Re(I) Supramolecular Rectangles
| Autor: | R. Nagarajaprakash, Bala. Manimaran, R. Govindarajan |
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| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Inorganic Chemistry. 54:10686-10694 |
| ISSN: | 1520-510X 0020-1669 |
| DOI: | 10.1021/acs.inorgchem.5b01543 |
| Popis: | Aminoquinonato bridged Re(I)-based metallarectangles have been constructed via an orthogonal bonding approach. Self-assembly of Re2(CO)10 and aminoquinone ligands in the presence of ditopic linear pyridyl ligands has resulted in the formation of metallarectangles of the general formula [{(CO)3Re(μ-η(4)-L)Re(CO)3}2(μ-N-L'-N)2] (1-4), wherein 1, L = 2,5-bis(n-butylamino)-1,4-benzoquinonato (bbbq) and N-L'-N = 4,4'-bipyridine (bpy); 2, L = 2,5-bis(phenethylamino)-1,4-benzoquinonato (bpbq) and N-L'-N = 4,4'-bipyridine; 3, L = 2,5-bis(n-butylamino)-1,4-benzoquinonato (bbbq) and N-L'-N = trans-1,2-bis(4-pyridyl)ethylene (bpe) and 4, L = 2,5-bis(phenethylamino)-1,4-benzoquinonato (bpbq) and N-L'-N = trans-1,2-bis(4-pyridyl)ethylene (bpe). Metallarectangles 1-4 have been characterized by elemental analysis, IR, NMR, and UV-vis absorption spectroscopic techniques. The molecular structures of 1 and 4 were determined by single-crystal X-ray diffraction methods. The molecular recognition capability of 1 and 3 with pyrene and triphenylene has been investigated using UV-vis absorption and emission spectroscopic techniques. The formation of host-guest complex has been further corroborated by the single-crystal X-ray structural evidence of carceplex system (3⊃pyrene)·(DMF). |
| Databáze: | OpenAIRE |
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