Meyer反应的机理、等效介质及其反应设计研究

A Study on the Mechanism of Meyer′s Reaction Equal Effect Medium, and Reaction Designing

以Ｍｅｙｅｒ反应为出发点，研究了ＭＸ－ＲＥＸ３－ＨＸ－Ｈ２Ｏ和ＭＸ－ＲＥＸ３－ＨＯＡｃ－Ｈ２Ｏ四元体系（Ｍ＝Ｋ，Ｒｂ，Ｃｓ；ＲＥ＝Ｌａ，Ｐｒ，Ｎｄ，Ｓｍ，Ｇｄ，Ｄｙ；Ｘ＝Ｃｌ，Ｂｒ）。对Ｍｅｙｅｒ反应的机理提出了新的解释，并给出了相应的反应式；发现在四元体系中醋酸水溶液可作为等效介质替代盐酸水溶液，而表现出相同的相化学行为；发现氯化物和溴化物的Ｍｅｙｅｒ反应有显著不同的相化学关系和不同的反应机理，首次依照四元体系的相化学关系，设计了一系列合成不同摩尔比的ＭＸ和ＲＥＸ３的化合物的新的无机合成反应。

On the basis of Meyer′s reaction, the quaternary systems MX-REX 3-HX-H 2O and MX-REX 3-HOAc-H 2O(M=K,Rb,Cs; RE=La,Pr,Nd,Sm,Gd,Dy; X=Cl,Br) are studied. Furthermore, the new explanation for the mechanism of Meyer′s reaction as well as corresponded chemical equation are given. The acetic acid solution can replace the hydrochloric acid as equal effect medium in quaternary system, so they can show the same character in phase chemistry. The quite different mechanism and the phase chemical relation for the Meyer′s reaction of chloride and bromide are found. It is the first time that the new inorganic synthesizing reaction for a series of MX and REX 3 compunds with different mole ratio are designed based on the phase of chemical relation of the quaternary systems, the Meyer′s reaction is enriched and improved.