Tetranuclear copper complexes with new beta-diketone and beta-iminoketone-containing ligands

	Tetranuclear copper complexes with new beta-diketone and beta-iminoketone-containing ligands
	Yang, LQ; Wu, JG; Ju X(巨新); Ju, X
刊名	TRANSITION METAL CHEMISTRY
	1999
卷号	24 期号:3 页码:340-345
通讯作者	Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Factory, Beijing 100039, Peoples R China
英文摘要	Novel tetranuclear copper complexes, Cu-4(OH)(2)(ClO4)(3) (HA). H2O (1) and Cu-4(ClO4)(5)(H3B). 3H(2)O (2), were synthesized by reacting 1,5-bis(1'-phenyl-3'-methyl-5'-pyrazolone-4')-1 ,5-pentanedione with 1,3-propanediamine and 2-hydroxyl-1,3-propanediamine in the presence of a template reagent copper ion. New [2+2] type open cyclic multidentate ligands are also obtained from the reaction (H4A and H6B stand for new compounds from 1,3-propanediamine and 2-hydroxyl-1,3-propanediamine, respectively). They each contain five C = O, three C = N and one NH2 groups. The complexes were characterized by elemental analyses, conductivity, FT-i.r. (micro-i.r., deconvolution technique), FAB-MS, e.s.r., electronic spectra and extended X-ray absorption fine structure (EXAFS). Copper ions in (1) are basically four coordinate with tetragonal geometry. The average coordination bond distances of Cu-N and Cu-O are 1.91 Angstrom and 2.05 Angstrom. In (2), copper ions are primarily five coordinate with square-based pyramidal geometry. The average coordination bond distances of Cu-N and Cu-O are 1.93 Angstrom and 2.08 Angstrom. Four copper atoms in molecules may be arranged tetragonally. Both the ligand field and the coordination bonds in complex (1) are stronger than those in (2). Investigations on variable temperature susceptibilities show that some antiferromagnetic exchange interaction exist in the complexes. The plots of chi(-1) versus T obey the Curie-Weiss law only at low temperature. Preliminary results of a bioassay indicate that the two complexes have some antitumour activity in vitro.
学科主题	Chemistry
类目[WOS]	Chemistry, Inorganic & Nuclear
研究领域[WOS]	Chemistry
原文出处	SCI
语种	英语
WOS记录号	WOS:000080544900019
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/237056]
专题	高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Yang, LQ,Wu, JG,Ju X,et al. Tetranuclear copper complexes with new beta-diketone and beta-iminoketone-containing ligands[J]. TRANSITION METAL CHEMISTRY,1999,24(3):340-345.
APA	Yang, LQ,Wu, JG,巨新,&Ju, X.(1999).Tetranuclear copper complexes with new beta-diketone and beta-iminoketone-containing ligands.TRANSITION METAL CHEMISTRY,24(3),340-345.
MLA	Yang, LQ,et al."Tetranuclear copper complexes with new beta-diketone and beta-iminoketone-containing ligands".TRANSITION METAL CHEMISTRY 24.3(1999):340-345.