Complexation of Cyclic Glutarimidedioxime with Cerium: Surrogating for Redox Behavior of Plutonium
作者:Baihua Chen、Bijun Liu、Yao He、Daibing Luo、Wanjun Mu、Yuchuan Yang、Yanqiu Yang、Shuming Peng、Xingliang Li
DOI:10.1021/acs.inorgchem.0c03480
日期:2021.3.1
The complexation of cerium with glutarimidedioxime (H2L) was studied by potentiometry, ESI-mass spectrometry, and cyclic voltammetry. Crystallization of [CeIV(HL)3]+ from Ce3+ starting reactant indicated spontaneous complexation-driven oxidation. In aqueous solution, Ce3+ ions form three successive complexes, Ce(HL)2+, Ce(HL)2+, and Ce(HL)3 (where HL– stands for the singly deprotonated ligand). The
Interactions of vanadium(<scp>iv</scp>) with amidoxime ligands: redox reactivity
作者:B. F. Parker、S. Hohloch、J. R. Pankhurst、Z. Zhang、J. B. Love、J. Arnold、L. Rao
DOI:10.1039/c7dt04069e
日期:——
ions for uranium sorption as V(V) species, however, vanadium is also present as V(IV) in seawater. In the present study, the interactions of V(IV) with amidoxime and similar ligands were explored. Attempts were made to synthesize V(IV) complexes of glutaroimide-dioxime, a molecular analogue of polymer sorbents. However, V(IV) was found to react irreversibly with glutaroimide-dioxime and other oxime groups
Complexation of Lanthanides with Glutaroimide-dioxime: Binding Strength and Coordination Modes
作者:Seraj A. Ansari、Yanqiu Yang、Zhicheng Zhang、Kevin J. Gagnon、Simon J. Teat、Shunzhong Luo、Linfeng Rao
DOI:10.1021/acs.inorgchem.5b02653
日期:2016.2.1
deprotonated ligand). The enthalpies of complexation, determined by microcalorimetry, show that the formation of these complexes is exothermic. The stability constants of Ln3+/H2L complexes are several orders of magnitude lower than that of the corresponding Fe3+/H2L complexes but are comparable with that of UO22+/H2L complexes. A structure of Eu3+/H2L complex, identified by single-crystal X-ray diffractometry
镧系元素(Nd 3+和Eu 3+)与戊二酰亚胺二肟(H 2 L)的络合物,已经发现可以与act系元素(UO 2 2+和NpO 2 +)形成稳定的络合物并过渡金属离子(Fe 3+,Cu 2+等)通过电位计,吸收分光光度法,发光光谱和微量量热法进行了研究。镧系元素形成三个连续的络合物,M(HL)2 +,M(HL)L和M(HL)2 +(其中M代表Nd 3+ / Eu 3+和HL –代表单个去质子化的配体)。通过微量量热法测定的络合焓表明,这些络合物的形成是放热的。Ln 3+ / H 2 L络合物的稳定常数比相应的Fe 3+ / H 2 L络合物的稳定常数低几个数量级,但与UO 2 2+ / H 2 L络合物的稳定常数相当。通过单晶X射线衍射确定的Eu 3+ / H 2 L络合物的结构表明,配体与Eu 3+配位以三齿模式,通过肟基团的两个氧原子和酰亚胺基团的氮原子。肟基(-CH = N-O的质子的
Complexation-assisted reduction: complexes of glutaroimide-dioxime with tetravalent actinides (Np(<scp>iv</scp>) and Th(<scp>iv</scp>))
作者:Zhicheng Zhang、Bernard F. Parker、Trevor D. Lohrey、Simon J. Teat、John Arnold、Linfeng Rao
DOI:10.1039/c8dt01191e
日期:——
strong complexes with tetravalent Th(IV) and Np(IV) in aqueous solution. In conjunction with literature data on the complexation of glutaroimide-dioxime with other metal ions, it was found that the complexes become weaker as the effective charge density on the metal ions decreases: V5+ > Th4+ ≈ Fe3+ > UO22+ > Eu3+/Nd3+ > Cu2+ > Pb2+ > NpO2+ > Ca2+/Mg2+. In the glutaroimide-dioxime complexes with Th(IV)
Crystal structure and magnetic properties of a pentanuclear copper(II) 12-metallacrown-4 complex derived from glutaroimide-dioxime
作者:Xiao-Meng Liu、Xue-Qi Li、Qing-Lun Wang、Qian-Ying Liu、Yu-Zhang Tong、Xiao-Pu Jia、Chun Yang
DOI:10.1016/j.inoche.2020.107985
日期:2020.8
Abstract Reaction of copper(II) perchlorate with glutaroimide-dioxime (H3gido) in MeOH solution led to a quasi co-planar 12-metallacrown-4 complex [Cu5(Hgido)4(ClO4)2]·CH3OH(1). The structure of complex 1 has been confirmed by X-ray analysis: two types of similar 12-metallacrown-4 units are connected into 1D chain by perchlorate anions. The temperature dependent magnetic susceptibilities analysis indicates
摘要 高氯酸铜 (II) 与戊二酰亚胺-二肟 (H3gido) 在 MeOH 溶液中反应生成准共面的 12-metallacrown-4 配合物 [Cu5(Hgido)4(ClO4)2]·CH3OH(1)。配合物 1 的结构已通过 X 射线分析得到证实:两种相似的 12-metallacrown-4 单元通过高氯酸根阴离子连接成一维链。温度相关磁化率分析表明,通过 Cu(II)外周-Cu(II)中心和 Cu(II)外周-Cu(II)外周通路的反铁磁交换相互作用为 J1 = -41.3 和 J2 = -14.2 cm− 1、分别。2 K 处的场相关磁化证实了 St = 3/2 的基态。