Trinuclear Cu-II Structural Isomers: Coordination, Magnetism, Electrochemistry and Catalytic Activity towards the Oxidation of Alkanes

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	Trinuclear Cu-II Structural Isomers: Coordination, Magnetism, Electrochemistry and Catalytic Activity towards the Oxidation of Alkanes
	Sutradhar, Manas; Martins, Luisa M. D. R. S.; Guedes da Silva, M. Fatima C.; Mahmudov, Kamran T.; Liu, Cai-Ming; Pombeiro, Armando J. L.
刊名	EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
	2015-08-01
期号	23 页码:3959-3969
英文摘要	The reaction of the Schiff base (3,5-di-tert-butyl-2-hydroxybenzylidene)-2-hydroxybenzohydrazide (H3L) with copper(II) nitrate, acetate or metaborate has led to the isomeric complexes [Cu-3(L)(2)(MeOH)(4)] (1), [Cu-3(L)(2)(MeOH)(2)]2MeOH (2) and [Cu-3(L)(2)(MeOH)(4)] (3), respectively, in which the ligand L exhibits dianionic (HL2-, in 1) or trianionic (L3-, in 2 and 3) pentadentate 1O,O,N:2N,O chelation modes. Complexes 1-3 were characterized by elemental analysis, IR spectroscopy, single-crystal X-ray crystallography, electrochemical methods and variable-temperature magnetic susceptibility measurements, which indicated that the intratrimer antiferromagnetic coupling is strong in the three complexes and that there exists very weak ferromagnetic intermolecular interactions in 1 but weak antiferromagnetic intermolecular interactions in both 2 and 3. Electrochemical experiments showed that in complexes 1-3 the Cu-II ions can be reduced, in distinct steps, to Cu-I and Cu-0. All the complexes act as efficient catalyst precursors under mild conditions for the peroxidative oxidation of cyclohexane to cyclohexyl hydroperoxide, cyclohexanol and cyclohexanone, leading to overall yields (based on the alkane) of up to 31% (TON = 1.55x10(3)) after 6 h in the presence of pyrazinecarboxylic acid.
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/38671]
专题	化学研究所_其它
推荐引用方式 GB/T 7714	Sutradhar, Manas,Martins, Luisa M. D. R. S.,Guedes da Silva, M. Fatima C.,et al. Trinuclear Cu-II Structural Isomers: Coordination, Magnetism, Electrochemistry and Catalytic Activity towards the Oxidation of Alkanes[J]. EUROPEAN JOURNAL OF INORGANIC CHEMISTRY,2015(23):3959-3969.
APA	Sutradhar, Manas,Martins, Luisa M. D. R. S.,Guedes da Silva, M. Fatima C.,Mahmudov, Kamran T.,Liu, Cai-Ming,&Pombeiro, Armando J. L..(2015).Trinuclear Cu-II Structural Isomers: Coordination, Magnetism, Electrochemistry and Catalytic Activity towards the Oxidation of Alkanes.EUROPEAN JOURNAL OF INORGANIC CHEMISTRY(23),3959-3969.
MLA	Sutradhar, Manas,et al."Trinuclear Cu-II Structural Isomers: Coordination, Magnetism, Electrochemistry and Catalytic Activity towards the Oxidation of Alkanes".EUROPEAN JOURNAL OF INORGANIC CHEMISTRY .23(2015):3959-3969.