IR-Spectral Study of Solid State Complexes of Lanthanum with Mono-and bis-(2-Ethylhexyl) Phosphoric Acids
IR-Spectral Study of Solid State Complexes of Lanthanum with Mono-and bis-(2-Ethylhexyl) Phosphoric Acids
复制标题
镧与单和双（2-乙基己基）磷酸的固态配合物的红外光谱研究
DOI：
10.1080/00387019608001610
复制
发表时间：
1996
影响因子：
1.7
通讯作者：
D. Todorovsky
中科院分区：
文献类型：
--
作者：
M. Arnaudov;M. Milanova;D. Todorovsky
本文研究了镧与一、二（2-乙基己基）磷酸（H_2B，分别为H_2B）的固态配合物的红外光谱。HA）进行了研究。结果表明，La以LaO_6八面体形式与HA配位，并通过-La-O-P-O-La-桥键连接。如此固定的多核链形成络合物的晶体结构。所得的红外光谱数据以及X-射线粉末衍射分析的结果表明，La形成短的聚合物链比同类型的其他稀土配合物。本文研究了La与H_2B固态配合物的合成方法。结果表明，La-HB-配合物的结构也是由LaO_6-八面体和La_2O_3-八面体组成。La-O-P-O-La-聚合物链。然而，它们是通过α-PO-H结合的，O（H）-P氢键，这是由于络合物中存在未去质子化的羟基。如此形成的超分子结构必须比在与HA的复合物的情况下的超分子结构更加无序。这个...
Abstract IR-spectra of the solid state lanthanum complexes with mono-and bis-(2-ethylhexyl) phosphoric acids (H2B, resp. HA) are studied. It is confirmed that La coordinates HA as LaO6-octahedra, connected through -La-O-P-O-La-bridging bonds. The so fixed polynucleous chains form the crystal structure of the complex. The obtained IR-spectral data as well as the results of the X-ray powder diffraction analysis show that La forms shorter polymeric chains than the other rare earth complexes of the same type. Certain methods for the synthesis of the solid state complexes of La with H2B (studied for the first time) are considered. It is shown that the structure of La-HB-complexes is consituted also by LaO6-octahedra, resp.-La-O-P-O-La-polymeric chains. However they are binded through crosswise PO—H., O(H)-P hydrogen bonds, owing to the non-deprotonized hydroxo-group presented in the complex. The so formed supramolecular structure has to be more disordered than the one in the case of the complexes with HA. This...