A computational study on the complexation of Np(v) with N,N,N',N '-tetramethyl-3-oxa-glutaramide (TMOGA) and its carboxylate analogs

	A computational study on the complexation of Np(v) with N,N,N',N '-tetramethyl-3-oxa-glutaramide (TMOGA) and its carboxylate analogs
	Ceng JH(曾景晖); Yang X(杨霞); Zeng, JH; Yang, X; Liao, JL; Liu, N; Yang, YY; Chai, ZF; Wang, DQ;; Chai ZF(柴之芳)
刊名	PHYSICAL CHEMISTRY CHEMICAL PHYSICS
	2014
卷号	16 期号:31 页码:16536-16546
英文摘要	Density functional theory has been used to study the geometries and relative stabilities of the complexes of NpO2+ with the title compounds (L), including TMOGA, deprotonated N,N'-dimethyl-3-oxa-glutaramic acid (DMOGA) and their deprotonated oxydiacetic analog (ODA). Our calculations suggest that the complexes where the ligands appear as tridentate chelators are more stable than as bidentate ones, and the substitution of the amide group by carboxylate favors the formation of the complexes. Thermodynamically the 1:2 complex (Np-L-2) is more favorable than the 1:1 complex (Np-L) in the cases of TMOGA and DMOGA, but not for the ODA anion. Taking into account the solvation effect of water, the 1:2 complex is more favorable than the 1:1 complex for all of the three ligands, though the reaction enthalpy decreases compared to that in the gas phase, and the formation of Np-(TMOGA)(2) from Np-TMOGA is roughly a thermal neutral process. The strength of the Np=O bond is weakened upon the coordination of ligands to Np(v) and the increase of the negative charge on the ligand (-1e for deprotonated DMOGA and -2e for deprotonated ODA). The Quantum Theory of Atoms-in-Molecules (QTAIM) was used here to analyze the bonding mode of NpO2+-L-x (x = 1, 2) and to compare the bond order data.
学科主题	Chemistry; Physics
收录类别	SCI
WOS记录号	WOS:000340075700024
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/225249]
专题	高能物理研究所_院士高能物理研究所_多学科研究中心
推荐引用方式 GB/T 7714	Ceng JH,Yang X,Zeng, JH,et al. A computational study on the complexation of Np(v) with N,N,N',N '-tetramethyl-3-oxa-glutaramide (TMOGA) and its carboxylate analogs[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2014,16(31):16536-16546.
APA	曾景晖.,杨霞.,Zeng, JH.,Yang, X.,Liao, JL.,...&王东琪.(2014).A computational study on the complexation of Np(v) with N,N,N',N '-tetramethyl-3-oxa-glutaramide (TMOGA) and its carboxylate analogs.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,16(31),16536-16546.
MLA	曾景晖,et al."A computational study on the complexation of Np(v) with N,N,N',N '-tetramethyl-3-oxa-glutaramide (TMOGA) and its carboxylate analogs".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 16.31(2014):16536-16546.