Synthesis and characterization of actinide-exchanged Preyssler heteropolyanions [AnP5W30O110]n- (An≡Th, Am, Cm)
Synthesis and characterization of actinide-exchanged Preyssler heteropolyanions [AnP5W30O110]n- (An≡Th, Am, Cm)
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锕系元素交换普雷斯勒杂多阴离子[AnP5W30O110]n- (An≡Th, Am, Cm)的合成与表征
DOI：
10.1016/s0925-8388(98)00231-x
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
L. Soderholm
中科院分区：
文献类型：
--
作者：
M. Antonio;C. Williams;L. Soderholm
在使用杂多酸簇作为锕系元素络合剂的兴趣激发了我们对Preyssler杂多钨酸盐阴离子[NaP 5 W30 O 110]14−及其锕系元素交换衍生物[AnP 5 W30 O 110]n−的研究。在特定条件下，Na+可以被La 3+和Th 4+以及U 4+和超铀元素Am 3+和Cm 3+取代。[AnP 5 W30 O 110]11−（An）、[AnP 5 W30 O 110]12−（An）和[LaP 5 W30 O 110] 12−（An）都表现出显著的氧化还原性质，并形成杂多蓝。虽然相似，但An 3 +/La 3 +-和An 4 +-交换阴离子的电化学是不同的，并且可通过在水性无机酸电解质中的循环伏安法区分。将沿着循环伏安法测量的结果描述La 3+、Th 4+、Am 3+和Cm 3+的新Preyssler阴离子络合物的合成。
Interest in the use of heteropolyoxometalate clusters as actinide complexants motivates our studies of the Preyssler heteropolytungstate anion, [NaP5W30O110]14−, and its actinide-exchanged derivatives, [AnP5W30O110]n−. Under specific conditions, substitution of Na+is possible by La3+and Th4+as well as by U4+and the transuranics Am3+and Cm3+. Both [AnP5W30O110]11−(for An≡Th4+, U4+) and [AnP5W30O110]12−(for An≡Am3+, Cm3+) as well as [LaP5W30O110]12−exhibit remarkable redox properties and form heteropoly blues. Although similar, the electrochemistry of the An3+/La3+- and An4+-exchanged anions are different and distinguishable by cyclic voltammetry in aqueous mineral acid electrolytes. The synthesis of the new Preyssler anion complexes of La3+, Th4+, Am3+, and Cm3+will be described along with results from cyclic voltammetry measurements.