Mono-, Tetra- and octanuclear transition metal complexes of in situ generated schiff base ligands containing up to 12 coordinating atoms: syntheses, structures and magnetism

doi:10.1039/c2ce25966d

CORC > 化学研究所 > 中国科学院化学研究所

	Mono-, Tetra- and octanuclear transition metal complexes of in situ generated schiff base ligands containing up to 12 coordinating atoms: syntheses, structures and magnetism
	Ding, Cai-Xia 1,2; Ni, Jia 3; Yang, Yu-Hua 1,2; Ng, Seik-Weng 4,5; Wang, Bing-Wu 6; Xie, Yong-Shu 1,2
刊名	CRYSTENGCOMM
	2012
卷号	14 期号:21 页码:7312-7319
ISSN号	1466-8033
DOI	10.1039/c2ce25966d
英文摘要	By the reaction of an alkoxyl containing tetraamine, 1,3-bis[(2-aminoethyl)amino]-2-propanol,with various aldehydes, O-vanillin and 2,6-diformyl-4-cresol, in the presence of various metal cations, four novel complexes were synthesized and structurally characterized. Complexes [CoHL1](ClO4)center dot 2MeOH (1) and [NiH2L2](ClO4)(2)center dot 0.5MeOH (2) have mononuclear structures, with the linear di-Schiff base ligand (HL1)(2-) and mono-Schiff base ligand H2L2 generated from in situ reactions under various pH conditions. In complexes [Ni4L3(SCN)(3)(MeOH)]Cl center dot 2.5MeOH (3), and [Cu-8(H2L3)(2)(OH)(4)(ClO4)](SCN)(6)(ClO4)center dot 8H(2)O (4), an interesting 32-membered dodecadentate macrocyclic ligand H4L3 comprising four Schiff base C=N double bonds was generated by a "2+2" type condensation reaction between the tetraamine and the dialdehyde. Complex 3 has a tetranuclear Ni-4 coordination structure with all 12 coordinating atoms of (L-3)(4-) utilized for coordination, and the alkoxyl groups are deprotonated and coordinated in a bridging mode. Complex 4 exhibits an octanuclear Cu-8 coordination structure, with a ClO4- bridging two tetranuclear [Cu4H2L3(OH)(2)](4+) moieties through four weak axial Cu-O coordination bonds. In complex 4, only 10 coordinating atoms of (L-3)(4-) are utilized for coordination, with the two alkoxyl groups left neutral and noncoordinated. It is noteworthy that H4L3 has two long saturated chains in the molecule. Therefore, it has good flexibility and tends to have a nonplanar structure. Variable temperature magnetic data for 3 and 4 indicated the existence of antiferromagnetic interactions, which were discussed based on the structural results.
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000309414300037
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/49223]
专题	中国科学院化学研究所
通讯作者	Xie, Yong-Shu
作者单位	1.E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China 2.E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China 3.Shantou Univ, Dept Chem, Shantou 515063, Peoples R China 4.Univ Malaya, Dept Chem, Kuala Lumpur 50603, Malaysia 5.King Abdulaziz Univ, Fac Sci, Dept Chem, Jeddah, Saudi Arabia 6.Peking Univ, Beijing Natl Lab Mol Sci, State Key Lab Rare Earth Mat Chem & Applicat, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Ding, Cai-Xia,Ni, Jia,Yang, Yu-Hua,et al. Mono-, Tetra- and octanuclear transition metal complexes of in situ generated schiff base ligands containing up to 12 coordinating atoms: syntheses, structures and magnetism[J]. CRYSTENGCOMM,2012,14(21):7312-7319.
APA	Ding, Cai-Xia,Ni, Jia,Yang, Yu-Hua,Ng, Seik-Weng,Wang, Bing-Wu,&Xie, Yong-Shu.(2012).Mono-, Tetra- and octanuclear transition metal complexes of in situ generated schiff base ligands containing up to 12 coordinating atoms: syntheses, structures and magnetism.CRYSTENGCOMM,14(21),7312-7319.
MLA	Ding, Cai-Xia,et al."Mono-, Tetra- and octanuclear transition metal complexes of in situ generated schiff base ligands containing up to 12 coordinating atoms: syntheses, structures and magnetism".CRYSTENGCOMM 14.21(2012):7312-7319.