Tautomeric effect of hydrazone Schiff bases in tetranuclear Cu(II) complexes: magnetism and catalytic activity towards mild hydrocarboxylation of alkanes

doi:10.1039/c3dt52453a

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	Tautomeric effect of hydrazone Schiff bases in tetranuclear Cu(II) complexes: magnetism and catalytic activity towards mild hydrocarboxylation of alkanes
	Sutradhar, Manas 1; Kirillova, Marina V.1; Guedes da Silva, M. Fatima C.1,2; Liu, Cai-Ming 3; Pombeiro, Armando J. L.1
刊名	DALTON TRANSACTIONS
	2013
卷号	42 期号:47 页码:16578-16587
ISSN号	1477-9226
DOI	10.1039/c3dt52453a
英文摘要	Three new tetranuclear copper(II) complexes [Cu(HL1)](4)center dot 4EtOH (1 center dot 4EtOH), [Cu(HL2)](4) (2) and [Cu(H2L3)](4)(NO3)(4)center dot 2H(2)O (3 center dot 2H(2)O) have been synthesized using three different hydrazone Schiff base ligands derived from the condensation of the aromatic acid hydrazides 2-hydroxybenzo-, 2-aminobenzoor benzo-hydrazide, with 2,3-dihydroxybenzaldehyde. Complexes 1 and 3 have been characterized by single crystal X-ray diffraction analysis. The coordinating behaviour of the ligand depends on the nature of the ortho substituent present in the hydrazide moiety. The ligands bearing a strong electron donating group (by resonance) in the ortho position undergo complexation via enolization and deprotonation, whereas the absence of such an effect leads to complexation via the keto form, and two different types of tetranuclear Cu(II) clusters, viz. open-cubane and cubane, are obtained. Variable temperature magnetic susceptibility measurements of complexes 1 and 3 have been carried out to examine the nature of magnetic interaction between the Cu(II) centres. All the three complexes (1-3) act as good catalyst precursors towards mild hydrocarboxylation of linear and cyclic alkanes into carboxylic acids in water-acetonitrile medium.
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000326988800018
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/54121]
专题	中国科学院化学研究所
通讯作者	Pombeiro, Armando J. L.
作者单位	1.Univ Lisbon, Inst Super Tecn, Ctr Quim Estrutural, P-1049001 Lisbon, Portugal 2.Univ Lusofona Humanidades & Tecnol, P-1749024 Lisbon, Portugal 3.Chinese Acad Sci, Ctr Mol Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Sutradhar, Manas,Kirillova, Marina V.,Guedes da Silva, M. Fatima C.,et al. Tautomeric effect of hydrazone Schiff bases in tetranuclear Cu(II) complexes: magnetism and catalytic activity towards mild hydrocarboxylation of alkanes[J]. DALTON TRANSACTIONS,2013,42(47):16578-16587.
APA	Sutradhar, Manas,Kirillova, Marina V.,Guedes da Silva, M. Fatima C.,Liu, Cai-Ming,&Pombeiro, Armando J. L..(2013).Tautomeric effect of hydrazone Schiff bases in tetranuclear Cu(II) complexes: magnetism and catalytic activity towards mild hydrocarboxylation of alkanes.DALTON TRANSACTIONS,42(47),16578-16587.
MLA	Sutradhar, Manas,et al."Tautomeric effect of hydrazone Schiff bases in tetranuclear Cu(II) complexes: magnetism and catalytic activity towards mild hydrocarboxylation of alkanes".DALTON TRANSACTIONS 42.47(2013):16578-16587.