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- W2011551230 abstract "The tridentate Schiff base ligand, 7-amino-4-methyl-5-aza-3-hepten-2-one (HAMAH), prepared by the mono-condensation of 1,2-diaminoethane and acetylacetone, reacts with Cu(BF4)2 · 6H2O to produce initially a dinuclear Cu(II) complex, [{Cu(AMAH)}2(μ-4,4′-bipy)](BF4)2 (1) which undergoes hydrolysis in the reaction mixture and finally produces a linear polymeric chain compound, [Cu(acac)2(μ-4,4′-bipy)]n (2). The geometry around the copper atom in compound 1 is distorted square planar while that in compound 2 is essentially an elongated octahedron. On the other hand, the ligand HAMAH reacts with Cu(ClO4)2 · 6H2O to yield a polymeric zigzag chain, [{Cu(acac)(CH3OH)(μ-4,4′-bipy)}(ClO4)]n (3). The geometry of the copper atom in 3 is square pyramidal with the two bipyridine molecules in the cis equatorial positions. All three complexes have been characterized by elemental analysis, IR and UV–Vis spectroscopy and single crystal X-ray diffraction studies. A probable explanation for the different size and shape of the reported polynuclear complexes formed by copper(II) and 4,4′-bipyridine has been put forward by taking into account the denticity and crystal field strength of the blocking ligand as well as the Jahn–Teller effect in copper(II)." @default.
- W2011551230 created "2016-06-24" @default.
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- W2011551230 date "2007-09-01" @default.
- W2011551230 modified "2023-10-18" @default.
- W2011551230 title "Synthesis, crystal structure and hydrolysis of a dinuclear copper(II) complex constructed by N2O donor Schiff base and 4,4′-bipyridine: Discrete supra-molecular ensembles vs. oligomers" @default.
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- W2011551230 doi "https://doi.org/10.1016/j.poly.2007.05.034" @default.
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