Mixed-Ligand Uranyl Polyrotaxanes Incorporating a Sulfate/Oxalate Coligand: Achieving Structural Diversity via pH-Dependent Competitive Effect

doi:10.1021/acs.inorgchem.6b02515

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	Mixed-Ligand Uranyl Polyrotaxanes Incorporating a Sulfate/Oxalate Coligand: Achieving Structural Diversity via pH-Dependent Competitive Effect
	Mei L(梅雷); Hu KQ(胡孔球); Chai ZF(柴之芳); Shi WQ(石伟群); Xie, ZN; Shi, WQ; Mei, L; Hu, KQ; Xie ZN(谢珍妮); Xia, LS
刊名	INORGANIC CHEMISTRY
	2017
卷号	56 期号:6 页码:3227-3237
ISSN号	0020-1669
DOI	10.1021/acs.inorgchem.6b02515
文献子类	Article
英文摘要	A mixed-ligand system provides an alternative route to tune the structures and properties of metal organic compounds by introducing functional organic or inorganic coligands. In this work, five new uranyl-based polyrotaxane compounds incorporating a sulfate or oxalate coligand have been hydrothermally synthesized via a mixed-ligand method. Based on C6BPCA@CB6 (C6BPCA = 1,1 '(hexane-1,6-diy1)bis(4-(carbonyl)pyridin-1-ium), CB6 = cucurbit[6]uril) ligand, UPS1 (UO2(L)0.5(SO4)(H2O)2H2O, L = C6BPCA@CB6) is formed by the alteration of initial aqueous solution pH to a higher acidity. The resulting 2D uranyl polyrotaxane sheet structure of UPS1 is based on uranyl-sulfate ribbons connected by the C6BPCA@CB6 pseudorotaxane linkers. By using oxalate ligand instead of sulfate, four oxalate-containing uranyl polyrotaxane compounds, UPO1-UPO4, have been acquired by tuning reaction pH and ligand concentration: UPO1 (UO2(L)0.5(C2O4)0.5(NO3). 3H2O) in one-dimensional chain was obtained at a low pH value range (1.47-1.89) and UPO2 (UO2(L)(C2O4)(H2O)7H2O)obtained at a higher pH value range (4.31-7.21). By lowering the amount of oxalate, another two uranyl polyrotaxane network UPO3 ((UO2)2(L)0.5(C2O4)2(H2O)) and UPO4 ((UO2)2O(OH)(L)0.5(C2O4)0.5(H2O)) could be acquired at a low pH value of 1.98 and a higher pH value over 6, respectively. The UPO1-UP04 compounds, which display structural diversity via pH-dependent competitive effect of oxalate, represent the first series of mixed-ligand uranyl polyrotaxanes with organic ligand as the coligand. Moreover, the self-assembly process and its internal mechanism concerning pH-dependent competitive effect and other related factors such as concentration-of the reagents and coordination behaviors of the coligands were discussed in detail.
电子版国际标准刊号	1520-510X
WOS关键词	METAL-ORGANIC FRAMEWORKS ; COORDINATION POLYMERS ; SUPRAMOLECULAR INCLUSION ; HETEROMETALLIC COMPLEXES ; STABILITY-CONSTANTS ; MOLECULAR MACHINES ; CARBOXYLIC-ACIDS ; ION COMPLEXES ; SOLID-STATE ; URANIUM
WOS研究方向	Chemistry
语种	英语
WOS记录号	WOS:000397171100017
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285153]
专题	中国科学院高能物理研究所_中国散裂中子源高能物理研究所_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	Mei L,Hu KQ,Chai ZF,et al. Mixed-Ligand Uranyl Polyrotaxanes Incorporating a Sulfate/Oxalate Coligand: Achieving Structural Diversity via pH-Dependent Competitive Effect[J]. INORGANIC CHEMISTRY,2017,56(6):3227-3237.
APA	梅雷.,胡孔球.,柴之芳.,石伟群.,Xie, ZN.,...&Chai, ZF.(2017).Mixed-Ligand Uranyl Polyrotaxanes Incorporating a Sulfate/Oxalate Coligand: Achieving Structural Diversity via pH-Dependent Competitive Effect.INORGANIC CHEMISTRY,56(6),3227-3237.
MLA	梅雷,et al."Mixed-Ligand Uranyl Polyrotaxanes Incorporating a Sulfate/Oxalate Coligand: Achieving Structural Diversity via pH-Dependent Competitive Effect".INORGANIC CHEMISTRY 56.6(2017):3227-3237.