Interaction between ligands in ternary complexes of cadmium(II) with phenanthroline and phenylalkylmalonates in solution

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	Interaction between ligands in ternary complexes of cadmium(II) with phenanthroline and phenylalkylmalonates in solution
	Guan, W.; Ge, C. H.; Zhang, X. D.; Tong, J.; Liu, Q. T.
	2006-11-01
发表期刊	RUSSIAN JOURNAL OF COORDINATION CHEMISTRY
卷号	32 期号:11 页码:811-814
摘要	The formation and stability of the ternary complexes of cadmium(II) with phenanthroline and malonate, phenylmalonate, benzylmalonate, 2-phenylethylmalonate, and 3-phenylpropylmalonate are studied by the potentiometric pH-titration technique in 40% (v/v) dioxane-water at 25 degrees C and 0.1 mol/l ionic strength (NaNO3). In all systems, there are stable ternary complexes. The complexes possess enhanced stability relative to their statistical values. The possible reasons that lead to these results are discussed in terms of pi-electron back donation from metal ions to ligands and the intramolecular ligand-ligand aromatic ring stacking interaction. H-1 NMR measurements are used to demonstrate the aromatic ring-stacking interaction. The relative contribution of each interactions to the enhanced stability is also estimated. The results show that there are two weak interactions simultaneously observed in these ternary complexes. The interaction strength of aromatic ring stacking Z Z, in the ternary complexes increases in the phenylalkylmalonate ligand order: L-0 < L-1 < L-2 approximate to L-3 (L-0 phenylmalonate, L-1=benzylmalonate, L-2=2-phenylethylmalonate, L-3=3-phenylpropylmalonate).
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/5773
专题	青海盐湖研究所知识仓储中国科学院青海盐湖研究所
作者单位	1.Liaoning Univ, Dept Environm Sci, Shenyang 110036, Peoples R China 2.Liaoning Univ, Inst Chem Sci & Engn, Shenyang 110036, Peoples R China 3.Chinese Acad Sci, Inst Salt Lakes, Xining 810008, Peoples R China
推荐引用方式 GB/T 7714	Guan, W.,Ge, C. H.,Zhang, X. D.,et al. Interaction between ligands in ternary complexes of cadmium(II) with phenanthroline and phenylalkylmalonates in solution[J]. RUSSIAN JOURNAL OF COORDINATION CHEMISTRY,2006,32(11):811-814.
APA	Guan, W.,Ge, C. H.,Zhang, X. D.,Tong, J.,&Liu, Q. T..(2006).Interaction between ligands in ternary complexes of cadmium(II) with phenanthroline and phenylalkylmalonates in solution.RUSSIAN JOURNAL OF COORDINATION CHEMISTRY,32(11),811-814.
MLA	Guan, W.,et al."Interaction between ligands in ternary complexes of cadmium(II) with phenanthroline and phenylalkylmalonates in solution".RUSSIAN JOURNAL OF COORDINATION CHEMISTRY 32.11(2006):811-814.